diff --git a/src/hackerrank/implementation/betweenTwoSets.js b/src/hackerrank/implementation/betweenTwoSets.js
index 91b54d65..0b7dcde7 100644
--- a/src/hackerrank/implementation/betweenTwoSets.js
+++ b/src/hackerrank/implementation/betweenTwoSets.js
@@ -2,7 +2,7 @@
  * @link Problem definition [[docs/hackerrank/implementation/betweenTwoSets.md]]
  */
 
-export function isFactor(n, group) {
+function isFactor(n, group) {
   let result = true;
   let i = 0;
 
@@ -19,7 +19,7 @@ export function isFactor(n, group) {
   return result;
 }
 
-export function factorOf(n, group) {
+function factorOf(n, group) {
   let result = true;
   let i = 0;
 
@@ -36,7 +36,7 @@ export function factorOf(n, group) {
   return result;
 }
 
-export function getTotalX(a, b) {
+function getTotalX(a, b) {
   let max = 0;
   for (const j of b) {
     if (j > max) max = j;
@@ -53,4 +53,5 @@ export function getTotalX(a, b) {
   return result.length;
 }
 
-export default { getTotalX };
+export default { getTotalX, isFactor, factorOf };
+export { getTotalX, isFactor, factorOf };
diff --git a/src/hackerrank/implementation/birthday.js b/src/hackerrank/implementation/birthday.js
index 759f3027..aa047fbe 100644
--- a/src/hackerrank/implementation/birthday.js
+++ b/src/hackerrank/implementation/birthday.js
@@ -4,7 +4,7 @@
 
 import { logger as console } from '../../logger.js';
 
-export function birthday(s, d, m) {
+function birthday(s, d, m) {
   let result = 0;
   console.debug(`s: ${s}`);
 
@@ -23,3 +23,4 @@ export function birthday(s, d, m) {
 }
 
 export default { birthday };
+export { birthday };
diff --git a/src/hackerrank/implementation/bonAppetit.js b/src/hackerrank/implementation/bonAppetit.js
index 7cfcc78e..8d897509 100644
--- a/src/hackerrank/implementation/bonAppetit.js
+++ b/src/hackerrank/implementation/bonAppetit.js
@@ -4,7 +4,7 @@
 
 import { logger as console } from '../../logger.js';
 
-export function bonAppetit(bill, k, b) {
+function bonAppetit(bill, k, b) {
   const totalSum = bill.reduce(
     (previousValue, currentValue) => previousValue + currentValue,
     0
@@ -25,3 +25,4 @@ export function bonAppetit(bill, k, b) {
 }
 
 export default { bonAppetit };
+export { bonAppetit };
diff --git a/src/hackerrank/implementation/breakingRecords.js b/src/hackerrank/implementation/breakingRecords.js
index 5c536e65..0766d4f2 100644
--- a/src/hackerrank/implementation/breakingRecords.js
+++ b/src/hackerrank/implementation/breakingRecords.js
@@ -2,7 +2,7 @@
  * @link Problem definition [[docs/hackerrank/implementation/breakingRecords.md]]
  */
 
-export function breakingRecords(scores) {
+function breakingRecords(scores) {
   if (scores.length === 0) {
     throw new Error('Empty input');
   }
@@ -29,3 +29,4 @@ export function breakingRecords(scores) {
 }
 
 export default { breakingRecords };
+export { breakingRecords };
diff --git a/src/hackerrank/implementation/countApplesAndOranges.js b/src/hackerrank/implementation/countApplesAndOranges.js
index 2dfe652d..e30960f7 100644
--- a/src/hackerrank/implementation/countApplesAndOranges.js
+++ b/src/hackerrank/implementation/countApplesAndOranges.js
@@ -2,7 +2,7 @@
  * @link Problem definition [[docs/hackerrank/implementation/countApplesAndOranges.md]]
  */
 
-export function countApplesAndOranges(s, t, a, b, apples, oranges) {
+function countApplesAndOranges(s, t, a, b, apples, oranges) {
   let cApples = 0;
   let cOranges = 0;
 
@@ -26,3 +26,4 @@ export function countApplesAndOranges(s, t, a, b, apples, oranges) {
 }
 
 export default { countApplesAndOranges };
+export { countApplesAndOranges };
diff --git a/src/hackerrank/implementation/countingValleys.js b/src/hackerrank/implementation/countingValleys.js
index e8dab3fe..d327553b 100644
--- a/src/hackerrank/implementation/countingValleys.js
+++ b/src/hackerrank/implementation/countingValleys.js
@@ -4,7 +4,7 @@
 
 import { logger as console } from '../../logger.js';
 
-export function countingValleys(steps, path) {
+function countingValleys(steps, path) {
   const stepList = path.split('');
   let altitude = 0;
   let valleys = 0;
@@ -27,3 +27,4 @@ export function countingValleys(steps, path) {
 }
 
 export default { countingValleys };
+export { countingValleys };
diff --git a/src/hackerrank/implementation/dayOfProgrammer.js b/src/hackerrank/implementation/dayOfProgrammer.js
index 5f68628f..db976797 100644
--- a/src/hackerrank/implementation/dayOfProgrammer.js
+++ b/src/hackerrank/implementation/dayOfProgrammer.js
@@ -7,7 +7,7 @@ import { daysInMonthNumber } from '../../constants/index.js';
 
 const zeroPad = (num, places) => String(num).padStart(places, '0');
 
-export function dayOfProgrammer(year) {
+function dayOfProgrammer(year) {
   const dayToSearch = 256;
   let leap;
 
@@ -51,3 +51,4 @@ export function dayOfProgrammer(year) {
 }
 
 export default { dayOfProgrammer };
+export { dayOfProgrammer };
diff --git a/src/hackerrank/implementation/divisibleSumPairs.js b/src/hackerrank/implementation/divisibleSumPairs.js
index 3a055ca2..4ae64280 100644
--- a/src/hackerrank/implementation/divisibleSumPairs.js
+++ b/src/hackerrank/implementation/divisibleSumPairs.js
@@ -4,7 +4,7 @@
 
 import { logger as console } from '../../logger.js';
 
-export function divisibleSumPairs(n, k, ar) {
+function divisibleSumPairs(n, k, ar) {
   let pairs = 0;
   for (let i = 0; i < ar.length; i++) {
     for (let j = i + 1; j < ar.length; j++) {
@@ -19,3 +19,4 @@ export function divisibleSumPairs(n, k, ar) {
 }
 
 export default { divisibleSumPairs };
+export { divisibleSumPairs };
diff --git a/src/hackerrank/implementation/gradingStudents.js b/src/hackerrank/implementation/gradingStudents.js
index 0e8a4cee..9985fe5f 100644
--- a/src/hackerrank/implementation/gradingStudents.js
+++ b/src/hackerrank/implementation/gradingStudents.js
@@ -2,7 +2,7 @@
  * @link Problem definition [[docs/hackerrank/implementation/gradingStudents.md]]
  */
 
-export function gradingStudents(grades) {
+function gradingStudents(grades) {
   const minimum = 38;
   const roundTo = 5;
   const result = [];
@@ -23,3 +23,4 @@ export function gradingStudents(grades) {
 }
 
 export default { gradingStudents };
+export { gradingStudents };
diff --git a/src/hackerrank/implementation/jumpingOnClouds.js b/src/hackerrank/implementation/jumpingOnClouds.js
index 5411405d..6709387e 100644
--- a/src/hackerrank/implementation/jumpingOnClouds.js
+++ b/src/hackerrank/implementation/jumpingOnClouds.js
@@ -4,7 +4,7 @@
 
 import { logger as console } from '../../logger.js';
 
-export function jumpingOnClouds(c) {
+function jumpingOnClouds(c) {
   let result = 0;
   let key = 0;
 
@@ -26,3 +26,4 @@ export function jumpingOnClouds(c) {
 }
 
 export default { jumpingOnClouds };
+export { jumpingOnClouds };
diff --git a/src/hackerrank/implementation/kangaroo.js b/src/hackerrank/implementation/kangaroo.js
index 9b304d49..36293077 100644
--- a/src/hackerrank/implementation/kangaroo.js
+++ b/src/hackerrank/implementation/kangaroo.js
@@ -2,7 +2,7 @@
  * @link Problem definition [[docs/hackerrank/implementation/kangaroo.md]]
  */
 
-export function kangaroo(x1, v1, x2, v2) {
+function kangaroo(x1, v1, x2, v2) {
   if (v1 === v2) {
     if (x1 !== x2) return 'NO';
     return 'YES';
@@ -18,3 +18,4 @@ export function kangaroo(x1, v1, x2, v2) {
 }
 
 export default { kangaroo };
+export { kangaroo };
diff --git a/src/hackerrank/implementation/migratoryBirds.js b/src/hackerrank/implementation/migratoryBirds.js
index 611ad8dd..0e4be156 100644
--- a/src/hackerrank/implementation/migratoryBirds.js
+++ b/src/hackerrank/implementation/migratoryBirds.js
@@ -5,7 +5,7 @@
 import util from 'util';
 import { logger as console } from '../../logger.js';
 
-export function migratoryBirds(arr) {
+function migratoryBirds(arr) {
   if (arr.length === 0) {
     throw new Error('Empty input');
   }
@@ -35,3 +35,4 @@ export function migratoryBirds(arr) {
 }
 
 export default { migratoryBirds };
+export { migratoryBirds };
diff --git a/src/hackerrank/implementation/minimumAbsoluteDifference.js b/src/hackerrank/implementation/minimumAbsoluteDifference.js
index f082d68d..8691f55a 100644
--- a/src/hackerrank/implementation/minimumAbsoluteDifference.js
+++ b/src/hackerrank/implementation/minimumAbsoluteDifference.js
@@ -4,7 +4,7 @@
 
 import { logger as console } from '../../logger.js';
 
-export function minimumAbsoluteDifference(arr) {
+function minimumAbsoluteDifference(arr) {
   if (arr.length === 0) {
     throw new Error('Empty input');
   }
@@ -31,3 +31,4 @@ export function minimumAbsoluteDifference(arr) {
 }
 
 export default { minimumAbsoluteDifference };
+export { minimumAbsoluteDifference };
diff --git a/src/hackerrank/implementation/repeatedString.js b/src/hackerrank/implementation/repeatedString.js
index cdda9d65..71e92e81 100644
--- a/src/hackerrank/implementation/repeatedString.js
+++ b/src/hackerrank/implementation/repeatedString.js
@@ -4,7 +4,7 @@
 
 import { logger as console } from '../../logger.js';
 
-export function countAs(word) {
+function countAs(word) {
   let result = 0;
 
   const chars = word.split('');
@@ -18,7 +18,7 @@ export function countAs(word) {
   return result;
 }
 
-export function repeatedString(s, n) {
+function repeatedString(s, n) {
   let result = 0;
 
   const blockSize = s.length;
@@ -32,4 +32,5 @@ export function repeatedString(s, n) {
   return result;
 }
 
-export default { countAs };
+export default { repeatedString };
+export { repeatedString };
diff --git a/src/hackerrank/implementation/sockMerchant.js b/src/hackerrank/implementation/sockMerchant.js
index 8ce56c54..9fd4fe5f 100644
--- a/src/hackerrank/implementation/sockMerchant.js
+++ b/src/hackerrank/implementation/sockMerchant.js
@@ -4,7 +4,7 @@
 
 import { logger as console } from '../../logger.js';
 
-export function sockMerchant(n, ar) {
+function sockMerchant(n, ar) {
   let result = 0;
 
   const matches = {};
@@ -25,3 +25,4 @@ export function sockMerchant(n, ar) {
 }
 
 export default { sockMerchant };
+export { sockMerchant };
diff --git a/src/hackerrank/interview_preparation_kit/arrays/2d_array.js b/src/hackerrank/interview_preparation_kit/arrays/2d_array.js
index d6474676..6a2b8cb3 100644
--- a/src/hackerrank/interview_preparation_kit/arrays/2d_array.js
+++ b/src/hackerrank/interview_preparation_kit/arrays/2d_array.js
@@ -58,3 +58,4 @@ function hourglassSum(arr) {
 }
 
 export default { hourglassSum };
+export { hourglassSum };
diff --git a/src/hackerrank/interview_preparation_kit/arrays/2d_array.test.js b/src/hackerrank/interview_preparation_kit/arrays/2d_array.test.js
index c15f0072..c3f995e4 100644
--- a/src/hackerrank/interview_preparation_kit/arrays/2d_array.test.js
+++ b/src/hackerrank/interview_preparation_kit/arrays/2d_array.test.js
@@ -1,7 +1,7 @@
 import { describe, expect, it } from '@jest/globals';
 import { logger as console } from '../../../logger.js';
 
-import twoDArray from './2d_array.js';
+import { hourglassSum } from './2d_array.js';
 import TEST_CASES from './2d_array.testcases_test.json';
 
 describe('arrays: 2d Array hourglassSum', () => {
@@ -9,7 +9,7 @@ describe('arrays: 2d Array hourglassSum', () => {
     expect.assertions(3);
 
     TEST_CASES.forEach((test) => {
-      const answer = twoDArray.hourglassSum(test.input);
+      const answer = hourglassSum(test.input);
 
       console.debug(
         `gethourGlass(${test.input.toString()}) solution found: ${answer}`
diff --git a/src/hackerrank/interview_preparation_kit/arrays/cruch_bruteforce.js b/src/hackerrank/interview_preparation_kit/arrays/cruch_bruteforce.js
index fcd6ddfb..de72d674 100644
--- a/src/hackerrank/interview_preparation_kit/arrays/cruch_bruteforce.js
+++ b/src/hackerrank/interview_preparation_kit/arrays/cruch_bruteforce.js
@@ -29,3 +29,4 @@ function arrayManipulation(n, queries) {
 }
 
 export default { arrayManipulation };
+export { arrayManipulation };
diff --git a/src/hackerrank/interview_preparation_kit/arrays/cruch_bruteforce.test.js b/src/hackerrank/interview_preparation_kit/arrays/cruch_bruteforce.test.js
index 6b43b49c..57af871c 100644
--- a/src/hackerrank/interview_preparation_kit/arrays/cruch_bruteforce.test.js
+++ b/src/hackerrank/interview_preparation_kit/arrays/cruch_bruteforce.test.js
@@ -3,14 +3,14 @@ import { logger as console } from '../../../logger.js';
 
 import TEST_CASES from './cruch_testcases_test.json';
 
-import crush from './cruch_bruteforce.js';
+import { arrayManipulation } from './cruch_bruteforce.js';
 
 describe('arrays: crush (bruteforce) small cases', () => {
   it('arrayManipulation Test Cases', () => {
     expect.assertions(3);
 
     TEST_CASES.forEach((test) => {
-      const answer = crush.arrayManipulation(test.n, test.queries);
+      const answer = arrayManipulation(test.n, test.queries);
 
       console.debug(
         `arrayManipulation(${test.n}, ${test.queries}) solution found: ${answer}`
diff --git a/src/hackerrank/interview_preparation_kit/arrays/cruch_optimized.js b/src/hackerrank/interview_preparation_kit/arrays/cruch_optimized.js
index fe27e72d..dcb32065 100644
--- a/src/hackerrank/interview_preparation_kit/arrays/cruch_optimized.js
+++ b/src/hackerrank/interview_preparation_kit/arrays/cruch_optimized.js
@@ -29,3 +29,4 @@ function arrayManipulation(n, queries) {
 }
 
 export default { arrayManipulation };
+export { arrayManipulation };
diff --git a/src/hackerrank/interview_preparation_kit/arrays/cruch_optimized.test.js b/src/hackerrank/interview_preparation_kit/arrays/cruch_optimized.test.js
index 42f52835..f1bd9e86 100644
--- a/src/hackerrank/interview_preparation_kit/arrays/cruch_optimized.test.js
+++ b/src/hackerrank/interview_preparation_kit/arrays/cruch_optimized.test.js
@@ -3,14 +3,14 @@ import { logger as console } from '../../../logger.js';
 
 import TEST_CASES from './cruch_testcases_test.json';
 
-import crush from './cruch_optimized.js';
+import { arrayManipulation } from './cruch_optimized.js';
 
 describe('arrays: crush (optimized)', () => {
   it('arrayManipulation Test Cases', () => {
     expect.assertions(3);
 
     TEST_CASES.forEach((test) => {
-      const answer = crush.arrayManipulation(test.n, test.queries);
+      const answer = arrayManipulation(test.n, test.queries);
 
       console.debug(
         `arrayManipulation(${test.n}, ${test.queries}) solution found: ${answer}`
diff --git a/src/hackerrank/interview_preparation_kit/arrays/ctci_array_left_rotation.js b/src/hackerrank/interview_preparation_kit/arrays/ctci_array_left_rotation.js
index 1890424c..7dd68e91 100644
--- a/src/hackerrank/interview_preparation_kit/arrays/ctci_array_left_rotation.js
+++ b/src/hackerrank/interview_preparation_kit/arrays/ctci_array_left_rotation.js
@@ -2,7 +2,7 @@
  * @link Problem definition [[docs/hackerrank/interview_preparation_kit/arrays/ctci_array_left_rotation.md]]
  */
 
-export function rotLeftOne(aNumbers) {
+function rotLeftOne(aNumbers) {
   const first = aNumbers.shift();
   if (first !== undefined) {
     aNumbers.push(first);
@@ -11,7 +11,7 @@ export function rotLeftOne(aNumbers) {
   return aNumbers;
 }
 
-export function rotLeft(aNumbers, dRotations) {
+function rotLeft(aNumbers, dRotations) {
   let output = [...aNumbers];
 
   for (let i = 0; i < dRotations; i++) {
@@ -22,3 +22,4 @@ export function rotLeft(aNumbers, dRotations) {
 }
 
 export default { rotLeft, rotLeftOne };
+export { rotLeft };
diff --git a/src/hackerrank/interview_preparation_kit/arrays/ctci_array_left_rotation.test.js b/src/hackerrank/interview_preparation_kit/arrays/ctci_array_left_rotation.test.js
index 8a66a45a..199cc9e2 100644
--- a/src/hackerrank/interview_preparation_kit/arrays/ctci_array_left_rotation.test.js
+++ b/src/hackerrank/interview_preparation_kit/arrays/ctci_array_left_rotation.test.js
@@ -1,42 +1,20 @@
 import { describe, expect, it } from '@jest/globals';
 import { logger as console } from '../../../logger.js';
 
-import { rotLeft, rotLeftOne } from './ctci_array_left_rotation.js';
+import { rotLeft } from './ctci_array_left_rotation.js';
 
-const ROT_LEFT_ONE_TEST_CASES = [
-  { numbers: [1, 2, 3, 4, 5], expected: [2, 3, 4, 5, 1] },
-  { numbers: [2, 3, 4, 5, 1], expected: [3, 4, 5, 1, 2] },
-  { numbers: [3, 4, 5, 1, 2], expected: [4, 5, 1, 2, 3] },
-  { numbers: [4, 5, 1, 2, 3], expected: [5, 1, 2, 3, 4] },
-  { numbers: [5, 1, 2, 3, 4], expected: [1, 2, 3, 4, 5] }
-];
-
-const ROT_LEFT_TEST_CASES = [
-  { numbers: [1, 2, 3, 4, 5], d_rotations: 4, expected: [5, 1, 2, 3, 4] }
-];
+import ROT_LEFT_TEST_CASES from './ctci_array_left_rotation.testcases.json';
 
 describe('ctci_array_left_rotation', () => {
-  it('rotLeftOne Test Cases', () => {
-    expect.assertions(5);
-
-    ROT_LEFT_ONE_TEST_CASES.forEach((value) => {
-      const answer = rotLeftOne(value.numbers);
-
-      console.debug(`rotLeftOne(${value.numbers}) solution found: ${answer}`);
-
-      expect(answer).toStrictEqual(value.expected);
-    });
-  });
-
   it('rotLeft Test cases', () => {
-    expect.assertions(1);
+    expect.assertions(8);
 
-    ROT_LEFT_TEST_CASES.forEach((value) => {
-      const answer = rotLeft(value.numbers, value.d_rotations);
+    ROT_LEFT_TEST_CASES.forEach((test) => {
+      const answer = rotLeft(test.input, test.d_rotations);
 
-      console.debug(`rotLeft(${value.numbers}) solution found: ${answer}`);
+      console.debug(`rotLeft(${test.numbers}) solution found: ${answer}`);
 
-      expect(answer).toStrictEqual(value.expected);
+      expect(answer).toStrictEqual(test.expected);
     });
   });
 });
diff --git a/src/hackerrank/interview_preparation_kit/arrays/ctci_array_left_rotation.testcases.json b/src/hackerrank/interview_preparation_kit/arrays/ctci_array_left_rotation.testcases.json
new file mode 100644
index 00000000..d78f6838
--- /dev/null
+++ b/src/hackerrank/interview_preparation_kit/arrays/ctci_array_left_rotation.testcases.json
@@ -0,0 +1,10 @@
+[
+  {"title": "Own 0", "input": [1, 2, 3, 4, 5], "d_rotations": 1, "expected": [2, 3, 4, 5, 1]},
+  {"title": "Own 1", "input": [2, 3, 4, 5, 1], "d_rotations": 1, "expected": [3, 4, 5, 1, 2]},
+  {"title": "Own 2", "input": [3, 4, 5, 1, 2], "d_rotations": 1, "expected": [4, 5, 1, 2, 3]},
+  {"title": "Own 3", "input": [4, 5, 1, 2, 3], "d_rotations": 1, "expected": [5, 1, 2, 3, 4]},
+  {"title": "Own 4", "input": [5, 1, 2, 3, 4], "d_rotations": 1, "expected": [1, 2, 3, 4, 5]},
+  {"title": "Sample Test case 0", "input": [1, 2, 3, 4, 5], "d_rotations": 4, "expected": [5, 1, 2, 3, 4]},
+  {"title": "Sample Test case 1", "input": [41, 73, 89, 7, 10, 1, 59, 58, 84, 77, 77, 97, 58, 1, 86, 58, 26, 10, 86, 51], "d_rotations": 10, "expected": [77, 97, 58, 1, 86, 58, 26, 10, 86, 51, 41, 73, 89, 7, 10, 1, 59, 58, 84, 77]},
+  {"title": "Sample Test case 2", "input": [33, 47, 70, 37, 8, 53, 13, 93, 71, 72, 51, 100, 60, 87, 97], "d_rotations": 13, "expected": [87, 97, 33, 47, 70, 37, 8, 53, 13, 93, 71, 72, 51, 100, 60]}
+]
diff --git a/src/hackerrank/interview_preparation_kit/arrays/minimum_swaps_2.js b/src/hackerrank/interview_preparation_kit/arrays/minimum_swaps_2.js
index 71d1a341..de3cb7d0 100644
--- a/src/hackerrank/interview_preparation_kit/arrays/minimum_swaps_2.js
+++ b/src/hackerrank/interview_preparation_kit/arrays/minimum_swaps_2.js
@@ -2,7 +2,7 @@
  * @link Problem definition [[docs/hackerrank/interview_preparation_kit/arrays/minimum_swaps_2.md]]
  */
 
-export function minimumSwaps(arr) {
+function minimumSwaps(arr) {
   const indexedGroup = arr.map((x) => x - 1);
   let swaps = 0;
   let index = 0;
@@ -23,3 +23,4 @@ export function minimumSwaps(arr) {
 }
 
 export default { minimumSwaps };
+export { minimumSwaps };
diff --git a/src/hackerrank/interview_preparation_kit/arrays/minimum_swaps_2.test.js b/src/hackerrank/interview_preparation_kit/arrays/minimum_swaps_2.test.js
index 9c784a32..7051d749 100644
--- a/src/hackerrank/interview_preparation_kit/arrays/minimum_swaps_2.test.js
+++ b/src/hackerrank/interview_preparation_kit/arrays/minimum_swaps_2.test.js
@@ -3,11 +3,7 @@ import { logger as console } from '../../../logger.js';
 
 import { minimumSwaps } from './minimum_swaps_2.js';
 
-const TEST_CASES = [
-  { title: 'Sample input 0', input: [4, 3, 1, 2], expected: 3 },
-  { title: 'Sample input 1', input: [2, 3, 4, 1, 5], expected: 3 },
-  { title: 'Sample input 2', input: [1, 3, 5, 2, 4, 6, 7], expected: 3 }
-];
+import TEST_CASES from './minimum_swaps_2.testcases.json';
 
 describe('minimum swaps 2', () => {
   it('minimumSwaps', () => {
diff --git a/src/hackerrank/interview_preparation_kit/arrays/minimum_swaps_2.testcases.json b/src/hackerrank/interview_preparation_kit/arrays/minimum_swaps_2.testcases.json
new file mode 100644
index 00000000..6a814023
--- /dev/null
+++ b/src/hackerrank/interview_preparation_kit/arrays/minimum_swaps_2.testcases.json
@@ -0,0 +1,5 @@
+[
+    {"title": "Sample input 0", "input": [4, 3, 1, 2], "expected": 3},
+    {"title": "Sample input 1", "input": [2, 3, 4, 1, 5], "expected": 3},
+    {"title": "Sample input 2", "input": [1, 3, 5, 2, 4, 6, 7], "expected": 3}
+]
diff --git a/src/hackerrank/interview_preparation_kit/arrays/new_year_chaos.js b/src/hackerrank/interview_preparation_kit/arrays/new_year_chaos.js
index 06d53d1d..e1328a7a 100644
--- a/src/hackerrank/interview_preparation_kit/arrays/new_year_chaos.js
+++ b/src/hackerrank/interview_preparation_kit/arrays/new_year_chaos.js
@@ -49,3 +49,10 @@ export default {
   minimumBribesText,
   TOO_CHAOTIC_ERROR
 };
+
+export {
+  minimumBribes,
+  minimumBribesCalculate,
+  minimumBribesText,
+  TOO_CHAOTIC_ERROR
+};
diff --git a/src/hackerrank/interview_preparation_kit/arrays/new_year_chaos.test.js b/src/hackerrank/interview_preparation_kit/arrays/new_year_chaos.test.js
index 5041126b..00bca3bd 100644
--- a/src/hackerrank/interview_preparation_kit/arrays/new_year_chaos.test.js
+++ b/src/hackerrank/interview_preparation_kit/arrays/new_year_chaos.test.js
@@ -1,7 +1,7 @@
 import { describe, expect, it } from '@jest/globals';
 import { logger as console } from '../../../logger.js';
 
-import testingModule from './new_year_chaos.js';
+import { minimumBribes, minimumBribesText } from './new_year_chaos.js';
 
 import TEST_CASES from './new_year_chaos.testcases.json';
 
@@ -10,8 +10,8 @@ describe('new_year_chaos', () => {
     expect.assertions(5);
 
     TEST_CASES.forEach((test) => {
-      const answer = testingModule.minimumBribesText(test.input);
-      testingModule.minimumBribes(test.input);
+      const answer = minimumBribesText(test.input);
+      minimumBribes(test.input);
 
       console.debug(
         `minimumBribesText(${test.input}) solution found: ${answer}`
diff --git a/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1.big.testcases.json b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1.big.testcases.json
new file mode 100644
index 00000000..f38639cd
--- /dev/null
+++ b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1.big.testcases.json
@@ -0,0 +1,12 @@
+[
+  {
+    "title": "Sample Test Case 2",
+    "input": [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+         1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+         1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+         1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+         1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
+    "r": 1,
+    "expected": 161700
+  }
+]
diff --git a/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1_testcases.json b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1.small.testcases.json
similarity index 100%
rename from src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1_testcases.json
rename to src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1.small.testcases.json
diff --git a/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1_bruteforce.js b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1_bruteforce.js
index edca0608..26a080d0 100644
--- a/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1_bruteforce.js
+++ b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1_bruteforce.js
@@ -4,7 +4,7 @@
  */
 import { logger as console } from '../../../logger.js';
 
-export function countTriplets(arr, ratio) {
+function countTriplets(arr, ratio) {
   const size = arr.length;
   let counter = 0;
 
@@ -24,3 +24,4 @@ export function countTriplets(arr, ratio) {
 }
 
 export default { countTriplets };
+export { countTriplets };
diff --git a/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1_bruteforce.test.js b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1_bruteforce.test.js
index 590330ef..264aea24 100644
--- a/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1_bruteforce.test.js
+++ b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1_bruteforce.test.js
@@ -3,32 +3,7 @@ import { logger as console } from '../../../logger.js';
 
 import { countTriplets } from './count_triplets_1_bruteforce.js';
 
-const SMALL_TEST_CASES = [
-  {
-    title: 'Sample Test Case 0',
-    input: [1, 2, 2, 4],
-    r: 2,
-    expected: 2
-  },
-  {
-    title: 'Sample Test Case 1',
-    input: [1, 3, 9, 9, 27, 81],
-    r: 3,
-    expected: 6
-  },
-  {
-    title: 'Sample Test Case 1 (unsorted)',
-    input: [9, 3, 1, 81, 9, 27],
-    r: 3,
-    expected: 1
-  },
-  {
-    title: 'Sample Test Case 12',
-    input: [1, 5, 5, 25, 125],
-    r: 5,
-    expected: 4
-  }
-];
+import SMALL_TEST_CASES from './count_triplets_1.small.testcases.json';
 
 describe('count_triplets_1', () => {
   it('countTriplets test cases', () => {
diff --git a/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1_optimized.test.js b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1_optimized.test.js
index 78890b9e..c65ca669 100644
--- a/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1_optimized.test.js
+++ b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1_optimized.test.js
@@ -2,21 +2,8 @@ import { describe, expect, it } from '@jest/globals';
 import { logger as console } from '../../../logger.js';
 
 import { countTriplets } from './count_triplets_1_optmized.js';
-import SMALL_TEST_CASES from './count_triplets_1_testcases.json';
-
-const BIG_TEST_CASES = [
-  {
-    title: 'Sample Test Case 2',
-    input: [
-      1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-      1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-      1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-      1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1
-    ],
-    r: 1,
-    expected: 161700
-  }
-];
+import SMALL_TEST_CASES from './count_triplets_1.small.testcases.json';
+import BIG_TEST_CASES from './count_triplets_1.big.testcases.json';
 
 describe('count_triplets_1 (optimized)', () => {
   it('countTriplets small test cases', () => {
diff --git a/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1_optmized.js b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1_optmized.js
index bef443a1..28a08ecb 100644
--- a/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1_optmized.js
+++ b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1_optmized.js
@@ -3,7 +3,7 @@
  * @see Solution Notes: [[docs/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/count_triplets_1-solution-notes.md]]
  */
 
-export function countTriplets(arr, ratio) {
+function countTriplets(arr, ratio) {
   let triplets = 0;
 
   const aCounter = arr.reduce((accumulator, entry) => {
@@ -36,3 +36,4 @@ export function countTriplets(arr, ratio) {
 }
 
 export default { countTriplets };
+export { countTriplets };
diff --git a/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/ctci-ransom-note.js b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/ctci-ransom-note.js
index 2ad2e791..7bfaa1ba 100644
--- a/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/ctci-ransom-note.js
+++ b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/ctci-ransom-note.js
@@ -5,7 +5,7 @@
 const __YES__ = 'Yes';
 const __NO__ = 'No';
 
-export function checkMagazineCompute(magazine, note) {
+function checkMagazineCompute(magazine, note) {
   const dictionary = {};
 
   for (const word of magazine) {
@@ -27,8 +27,13 @@ export function checkMagazineCompute(magazine, note) {
   return true;
 }
 
-export function checkMagazine(magazine, note) {
+function checkMagazineText(magazine, note) {
   return checkMagazineCompute(magazine, note) ? __YES__ : __NO__;
 }
 
-export default { checkMagazine };
+function checkMagazine(magazine, note) {
+  console.log(checkMagazineCompute(magazine, note) ? __YES__ : __NO__);
+}
+
+export default { checkMagazine, checkMagazineText };
+export { checkMagazine, checkMagazineText };
diff --git a/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/ctci-ransom-note.test.js b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/ctci-ransom-note.test.js
index 5e7aaa59..b25782bd 100644
--- a/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/ctci-ransom-note.test.js
+++ b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/ctci-ransom-note.test.js
@@ -1,35 +1,16 @@
 import { describe, expect, it } from '@jest/globals';
 import { logger as console } from '../../../logger.js';
 
-import { checkMagazine } from './ctci-ransom-note.js';
-
-const TEST_CASES = [
-  {
-    title: 'Sample Test Case 0',
-    magazine: ['give', 'me', 'one', 'grand', 'today', 'night'],
-    note: ['give', 'one', 'grand', 'today'],
-    expected: 'Yes'
-  },
-  {
-    title: 'Sample Test Case 1',
-    magazine: ['two', 'times', 'three', 'is', 'not', 'four'],
-    note: ['two', 'times', 'two', 'is', 'four'],
-    expected: 'No'
-  },
-  {
-    title: 'Sample Test',
-    magazine: ['two', 'two', 'times', 'three', 'is', 'not', 'four'],
-    note: ['two', 'times', 'two', 'is', 'four'],
-    expected: 'Yes'
-  }
-];
+import { checkMagazine, checkMagazineText } from './ctci-ransom-note.js';
+import TEST_CASES from './ctci-ransom-note.testcases.json';
 
 describe('ctci_ransom_note', () => {
   it('checkMagazine test cases', () => {
     expect.assertions(3);
 
     TEST_CASES.forEach((value) => {
-      const answer = checkMagazine(value.magazine, value.note);
+      const answer = checkMagazineText(value.magazine, value.note);
+      checkMagazine(value.magazine, value.note);
 
       console.debug(
         `checkMagazine(${value.magazine}, ${value.note}) solution found: ${answer}`
diff --git a/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/ctci-ransom-note.testcases.json b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/ctci-ransom-note.testcases.json
new file mode 100644
index 00000000..8f04948f
--- /dev/null
+++ b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/ctci-ransom-note.testcases.json
@@ -0,0 +1,20 @@
+[
+  {
+    "title": "Sample Test Case 0",
+    "magazine": ["give", "me", "one", "grand", "today", "night"],
+    "note": ["give", "one", "grand", "today"],
+    "expected": "Yes"
+  },
+  {
+    "title": "Sample Test Case 1",
+    "magazine": ["two", "times", "three", "is", "not", "four"],
+    "note": ["two", "times", "two", "is", "four"],
+    "expected": "No"
+  },
+  {
+    "title": "Sample Test",
+    "magazine": ["two", "two", "times", "three", "is", "not", "four"],
+    "note": ["two", "times", "two", "is", "four"],
+    "expected": "Yes"
+  }
+]
diff --git a/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/frequency_queries_bruteforce.js b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/frequency_queries_bruteforce.js
index 97612098..f9ec89a7 100644
--- a/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/frequency_queries_bruteforce.js
+++ b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/frequency_queries_bruteforce.js
@@ -3,7 +3,7 @@
  * @see Solution Notes: [[docs/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/frequency-queries-solution-notes.md]]
  */
 
-export function freqQuery(queries) {
+function freqQuery(queries) {
   const result = [];
   const dataMap = {};
 
@@ -45,3 +45,4 @@ export function freqQuery(queries) {
 }
 
 export default { freqQuery };
+export { freqQuery };
diff --git a/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/frequency_queries_optimized.js b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/frequency_queries_optimized.js
index c95fceb9..f052db31 100644
--- a/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/frequency_queries_optimized.js
+++ b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/frequency_queries_optimized.js
@@ -3,7 +3,7 @@
  * @see Solution Notes: [[docs/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/frequency-queries-solution-notes.md]]
  */
 
-export function updateFrequency(frequencyMap, data, currentFreq, newFreq) {
+function updateFrequency(frequencyMap, data, currentFreq, newFreq) {
   const freqMap = frequencyMap;
 
   if (newFreq > 0) {
@@ -25,7 +25,7 @@ export function updateFrequency(frequencyMap, data, currentFreq, newFreq) {
   return freqMap;
 }
 
-export function freqQuery(queries) {
+function freqQuery(queries) {
   const result = [];
   const dataMap = {};
   const freqMap = {};
@@ -81,3 +81,4 @@ export function freqQuery(queries) {
 }
 
 export default { freqQuery };
+export { freqQuery };
diff --git a/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/sherlock_and_anagrams.js b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/sherlock_and_anagrams.js
index a96c3f9f..ae99e7d0 100644
--- a/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/sherlock_and_anagrams.js
+++ b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/sherlock_and_anagrams.js
@@ -10,7 +10,7 @@ function extraLongFactorials(n) {
   return rs;
 }
 
-export function sherlockAndAnagrams(s) {
+function sherlockAndAnagrams(s) {
   const candidates = {};
   const size = s.length;
 
@@ -66,3 +66,4 @@ export function sherlockAndAnagrams(s) {
 }
 
 export default { sherlockAndAnagrams };
+export { sherlockAndAnagrams };
diff --git a/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/two_strings.js b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/two_strings.js
index 387ff39d..4ba37217 100644
--- a/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/two_strings.js
+++ b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/two_strings.js
@@ -5,7 +5,7 @@
 const __YES__ = 'YES';
 const __NO__ = 'NO';
 
-export function twoStringsCompute(s1, s2) {
+function twoStringsCompute(s1, s2) {
   for (const char of s1) {
     if (s2.includes(char)) {
       return true;
@@ -14,8 +14,9 @@ export function twoStringsCompute(s1, s2) {
   return false;
 }
 
-export function twoStrings(s1, s2) {
+function twoStrings(s1, s2) {
   return twoStringsCompute(s1, s2) ? __YES__ : __NO__;
 }
 
 export default { twoStrings };
+export { twoStrings };
diff --git a/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/two_strings.test.js b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/two_strings.test.js
index 23e95061..f4699a05 100644
--- a/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/two_strings.test.js
+++ b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/two_strings.test.js
@@ -2,71 +2,14 @@ import { describe, expect, it } from '@jest/globals';
 import { logger as console } from '../../../logger.js';
 
 import { twoStrings } from './two_strings.js';
-
-const TEST_CASES = [
-  {
-    title: 'Example 1 and 2',
-    comparing: [
-      {
-        s1: 'and',
-        s2: 'art',
-        expected: 'YES'
-      },
-      {
-        s1: 'be',
-        s2: 'cat',
-        expected: 'NO'
-      }
-    ]
-  },
-  {
-    title: 'Sample Test Case 0',
-    comparing: [
-      {
-        s1: 'hello',
-        s2: 'world',
-        expected: 'YES'
-      },
-      {
-        s1: 'hi',
-        s2: 'world',
-        expected: 'NO'
-      }
-    ]
-  },
-  {
-    title: 'Sample Test Case 6',
-    comparing: [
-      {
-        s1: 'wouldyoulikefries',
-        s2: 'abcabcabcabcabcabc',
-        expected: 'NO'
-      },
-      {
-        s1: 'hackerrankcommunity',
-        s2: 'cdecdecdecde',
-        expected: 'YES'
-      },
-      {
-        s1: 'jackandjill',
-        s2: 'wentupthehill',
-        expected: 'YES'
-      },
-      {
-        s1: 'writetoyourparents',
-        s2: 'fghmqzldbc',
-        expected: 'NO'
-      }
-    ]
-  }
-];
+import TEST_CASES from './two_strings.testcases.json';
 
 describe('two_strings', () => {
   it('twoStrings test cases', () => {
     expect.assertions(8);
 
     TEST_CASES.forEach((testCase) => {
-      testCase.comparing.forEach((test) => {
+      testCase.tests.forEach((test) => {
         const answer = twoStrings(test.s1, test.s2);
 
         console.debug(
diff --git a/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/two_strings.testcases.json b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/two_strings.testcases.json
new file mode 100644
index 00000000..2d4411b7
--- /dev/null
+++ b/src/hackerrank/interview_preparation_kit/dictionaries_and_hashmaps/two_strings.testcases.json
@@ -0,0 +1,57 @@
+[
+  {
+    "title": "Example 1 and 2",
+    "tests": [
+      {
+        "s1": "and",
+        "s2": "art",
+        "expected": "YES"
+      },
+      {
+        "s1": "be",
+        "s2": "cat",
+        "expected": "NO"
+      }
+    ]
+  },
+  {
+    "title": "Sample Test Case 0",
+    "tests": [
+      {
+        "s1": "hello",
+        "s2": "world",
+        "expected": "YES"
+      },
+      {
+        "s1": "hi",
+        "s2": "world",
+        "expected": "NO"
+      }
+    ]
+  },
+  {
+    "title": "Sample Test Case 6",
+    "tests": [
+      {
+        "s1": "wouldyoulikefries",
+        "s2": "abcabcabcabcabcabc",
+        "expected": "NO"
+      },
+      {
+        "s1": "hackerrankcommunity",
+        "s2": "cdecdecdecde",
+        "expected": "YES"
+      },
+      {
+        "s1": "jackandjill",
+        "s2": "wentupthehill",
+        "expected": "YES"
+      },
+      {
+        "s1": "writetoyourparents",
+        "s2": "fghmqzldbc",
+        "expected": "NO"
+      }
+    ]
+  }
+]
diff --git a/src/hackerrank/interview_preparation_kit/dynamic_programming/max_array_sum.js b/src/hackerrank/interview_preparation_kit/dynamic_programming/max_array_sum.js
index 25403b31..4b2e49ac 100644
--- a/src/hackerrank/interview_preparation_kit/dynamic_programming/max_array_sum.js
+++ b/src/hackerrank/interview_preparation_kit/dynamic_programming/max_array_sum.js
@@ -6,7 +6,7 @@
 const bigIntMax = (...args) =>
   args.reduce((m, e) => (e > m ? e : m), BigInt(0));
 
-export function maxSubsetSum(arr) {
+function maxSubsetSum(arr) {
   const arrCopy = arr.map((x) => BigInt(x));
 
   if (arrCopy.length === 0) {
@@ -32,3 +32,4 @@ export function maxSubsetSum(arr) {
 }
 
 export default { maxSubsetSum };
+export { maxSubsetSum };
diff --git a/src/hackerrank/interview_preparation_kit/greedy_algorithms/angry_children.js b/src/hackerrank/interview_preparation_kit/greedy_algorithms/angry_children.js
index d0120d0e..14bf0ed1 100644
--- a/src/hackerrank/interview_preparation_kit/greedy_algorithms/angry_children.js
+++ b/src/hackerrank/interview_preparation_kit/greedy_algorithms/angry_children.js
@@ -2,7 +2,7 @@
  * @link Problem definition [[docs/hackerrank/interview_preparation_kit/greedy_algorithms/angry-children.md]]
  */
 
-export function maxMin(k, arr) {
+function maxMin(k, arr) {
   const sortedlist = arr.map((x) => x).sort((a, b) => a - b);
 
   let result = sortedlist[sortedlist.length - 1] - sortedlist[0];
@@ -17,3 +17,4 @@ export function maxMin(k, arr) {
 }
 
 export default { maxMin };
+export { maxMin };
diff --git a/src/hackerrank/interview_preparation_kit/greedy_algorithms/greedy_florist.js b/src/hackerrank/interview_preparation_kit/greedy_algorithms/greedy_florist.js
index de098bed..ff3d8473 100644
--- a/src/hackerrank/interview_preparation_kit/greedy_algorithms/greedy_florist.js
+++ b/src/hackerrank/interview_preparation_kit/greedy_algorithms/greedy_florist.js
@@ -3,7 +3,7 @@
  * @see Solution Notes: [[docs/hackerrank/interview_preparation_kit/greedy_algorithms/greedy-florist-solution-notes.md]]
  */
 
-export function getMinimumCost(k, c) {
+function getMinimumCost(k, c) {
   const flowers = c.map((x) => x).sort((a, b) => b - a);
 
   let total = 0;
@@ -20,3 +20,4 @@ export function getMinimumCost(k, c) {
 }
 
 export default { getMinimumCost };
+export { getMinimumCost };
diff --git a/src/hackerrank/interview_preparation_kit/greedy_algorithms/luck-balance.js b/src/hackerrank/interview_preparation_kit/greedy_algorithms/luck-balance.js
index 6ee80d19..200fe06f 100644
--- a/src/hackerrank/interview_preparation_kit/greedy_algorithms/luck-balance.js
+++ b/src/hackerrank/interview_preparation_kit/greedy_algorithms/luck-balance.js
@@ -39,7 +39,7 @@ class Contest {
   }
 }
 
-export function luckBalance(k, contests) {
+function luckBalance(k, contests) {
   let importantContests = [];
   const nonimportantContests = [];
 
@@ -78,3 +78,4 @@ export function luckBalance(k, contests) {
 }
 
 export default { luckBalance };
+export { luckBalance };
diff --git a/src/hackerrank/interview_preparation_kit/greedy_algorithms/luck-balance.test.js b/src/hackerrank/interview_preparation_kit/greedy_algorithms/luck-balance.test.js
index 9f3f776c..8d021ed0 100644
--- a/src/hackerrank/interview_preparation_kit/greedy_algorithms/luck-balance.test.js
+++ b/src/hackerrank/interview_preparation_kit/greedy_algorithms/luck-balance.test.js
@@ -3,48 +3,7 @@ import { logger as console } from '../../../logger.js';
 
 import { luckBalance } from './luck-balance.js';
 
-const TEST_CASES = [
-  {
-    'title': 'Sample Test case 0',
-    'k': 3,
-    'contests': [
-      [5, 1],
-      [2, 1],
-      [1, 1],
-      [8, 1],
-      [10, 0],
-      [5, 0]
-    ],
-    'expected': 29
-  },
-  {
-    'title': 'Sample Test case 1',
-    'k': 5,
-    'contests': [
-      [13, 1],
-      [10, 1],
-      [9, 1],
-      [8, 1],
-      [13, 1],
-      [12, 1],
-      [18, 1],
-      [13, 1]
-    ],
-    'expected': 42
-  },
-  {
-    'title': 'Sample Test case 1',
-    'k': 2,
-    'contests': [
-      [5, 1],
-      [4, 0],
-      [6, 1],
-      [2, 1],
-      [8, 0]
-    ],
-    'expected': 21
-  }
-];
+import TEST_CASES from './luck-balance.testcases.json';
 
 describe('luck-balance', () => {
   it('luckBalance test cases', () => {
diff --git a/src/hackerrank/interview_preparation_kit/greedy_algorithms/luck-balance.testcases.json b/src/hackerrank/interview_preparation_kit/greedy_algorithms/luck-balance.testcases.json
new file mode 100644
index 00000000..d0777d48
--- /dev/null
+++ b/src/hackerrank/interview_preparation_kit/greedy_algorithms/luck-balance.testcases.json
@@ -0,0 +1,42 @@
+[
+  {
+    "title": "Sample Test case 0",
+    "k": 3,
+    "contests": [
+      [5, 1],
+      [2, 1],
+      [1, 1],
+      [8, 1],
+      [10, 0],
+      [5, 0]
+    ],
+    "expected": 29
+  },
+  {
+    "title": "Sample Test case 1",
+    "k": 5,
+    "contests": [
+      [13, 1],
+      [10, 1],
+      [9, 1],
+      [8, 1],
+      [13, 1],
+      [12, 1],
+      [18, 1],
+      [13, 1]
+    ],
+    "expected": 42
+  },
+  {
+    "title": "Sample Test case 1",
+    "k": 2,
+    "contests": [
+      [5, 1],
+      [4, 0],
+      [6, 1],
+      [2, 1],
+      [8, 0]
+    ],
+    "expected": 21
+  }
+]
diff --git a/src/hackerrank/interview_preparation_kit/greedy_algorithms/minimum_absolute_difference_in_an_array.js b/src/hackerrank/interview_preparation_kit/greedy_algorithms/minimum_absolute_difference_in_an_array.js
index fe7871f2..1665c4ce 100644
--- a/src/hackerrank/interview_preparation_kit/greedy_algorithms/minimum_absolute_difference_in_an_array.js
+++ b/src/hackerrank/interview_preparation_kit/greedy_algorithms/minimum_absolute_difference_in_an_array.js
@@ -2,7 +2,7 @@
  * @link Problem definition [[docs/hackerrank/interview_preparation_kit/greedy_algorithms/minimum-absolute-difference-in-an-array.md]]
  */
 
-export function minimumAbsoluteDifference(arr) {
+function minimumAbsoluteDifference(arr) {
   const sortedNums = arr.map((x) => x).sort((a, b) => b - a);
 
   let result = Math.abs(sortedNums[sortedNums.length - 1] - sortedNums[0]);
@@ -20,3 +20,4 @@ export function minimumAbsoluteDifference(arr) {
 }
 
 export default { minimumAbsoluteDifference };
+export { minimumAbsoluteDifference };
diff --git a/src/hackerrank/interview_preparation_kit/miscellaneous/flipping-bits.js b/src/hackerrank/interview_preparation_kit/miscellaneous/flipping-bits.js
index 6b3b7552..bc5d4fbc 100644
--- a/src/hackerrank/interview_preparation_kit/miscellaneous/flipping-bits.js
+++ b/src/hackerrank/interview_preparation_kit/miscellaneous/flipping-bits.js
@@ -5,7 +5,7 @@
 const __BINARY_BASE__ = 2;
 const __NUMBER_SIZE_IN_BITS__ = 32;
 
-export function flippingBits(n) {
+function flippingBits(n) {
   let nBinaryStr = n.toString(__BINARY_BASE__);
   nBinaryStr = nBinaryStr.padStart(__NUMBER_SIZE_IN_BITS__, '0');
 
@@ -23,3 +23,4 @@ export function flippingBits(n) {
 }
 
 export default { flippingBits };
+export { flippingBits };
diff --git a/src/hackerrank/interview_preparation_kit/miscellaneous/flipping-bits.test.js b/src/hackerrank/interview_preparation_kit/miscellaneous/flipping-bits.test.js
index 89519345..e7792b88 100644
--- a/src/hackerrank/interview_preparation_kit/miscellaneous/flipping-bits.test.js
+++ b/src/hackerrank/interview_preparation_kit/miscellaneous/flipping-bits.test.js
@@ -2,56 +2,7 @@ import { describe, expect, it } from '@jest/globals';
 import { logger as console } from '../../../logger.js';
 
 import { flippingBits } from './flipping-bits.js';
-
-const TEST_CASES = [
-  {
-    title: 'Sample Test Case 0',
-    tests: [
-      {
-        input: 2147483647,
-        expected: 2147483648
-      },
-      {
-        input: 1,
-        expected: 4294967294
-      },
-      {
-        input: 0,
-        expected: 4294967295
-      }
-    ]
-  },
-  {
-    title: 'Sample Test Case 1',
-    tests: [
-      {
-        input: 4,
-        expected: 4294967291
-      },
-      {
-        input: 123456,
-        expected: 4294843839
-      }
-    ]
-  },
-  {
-    title: 'Sample Test Case 2',
-    tests: [
-      {
-        input: 0,
-        expected: 4294967295
-      },
-      {
-        input: 802743475,
-        expected: 3492223820
-      },
-      {
-        input: 35601423,
-        expected: 4259365872
-      }
-    ]
-  }
-];
+import TEST_CASES from './flipping-bits.testcases.json';
 
 describe('flipping bits', () => {
   it('flipping bits test cases', () => {
diff --git a/src/hackerrank/interview_preparation_kit/miscellaneous/flipping-bits.testcases.json b/src/hackerrank/interview_preparation_kit/miscellaneous/flipping-bits.testcases.json
new file mode 100644
index 00000000..86e90789
--- /dev/null
+++ b/src/hackerrank/interview_preparation_kit/miscellaneous/flipping-bits.testcases.json
@@ -0,0 +1,54 @@
+[
+  {
+    "title": "Sample Test Case 0",
+    "tests":
+    [
+      {
+        "input": 2147483647,
+        "expected": 2147483648
+      },
+      {
+        "input": 1,
+        "expected": 4294967294
+      },
+      {
+        "input": 0,
+        "expected": 4294967295
+      }
+    ]
+  },
+  {
+    "title": "Sample Test Case 1",
+    "tests":
+    [
+
+      {
+        "input": 4,
+        "expected": 4294967291
+      },
+      {
+        "input": 123456,
+        "expected": 4294843839
+      }
+    ]
+  },
+  {
+    "title": "Sample Test Case 2",
+    "tests":
+    [
+
+      {
+        "input": 0,
+        "expected": 4294967295
+      },
+      {
+        "input": 802743475,
+        "expected": 3492223820
+      },
+      {
+        "input": 35601423,
+        "expected": 4259365872
+      }
+    ]
+  }
+]
diff --git a/src/hackerrank/interview_preparation_kit/miscellaneous/friend_circle_queries.js b/src/hackerrank/interview_preparation_kit/miscellaneous/friend_circle_queries.js
index 4a16327d..921dd035 100644
--- a/src/hackerrank/interview_preparation_kit/miscellaneous/friend_circle_queries.js
+++ b/src/hackerrank/interview_preparation_kit/miscellaneous/friend_circle_queries.js
@@ -56,7 +56,7 @@ class GropingFriends {
   }
 }
 
-export function maxCircle(queries) {
+function maxCircle(queries) {
   const result = [];
   const friends = new GropingFriends();
 
@@ -72,3 +72,4 @@ export function maxCircle(queries) {
 }
 
 export default { maxCircle };
+export { maxCircle };
diff --git a/src/hackerrank/interview_preparation_kit/recursion_and_backtracking/ctci_fibonacci_numbers.js b/src/hackerrank/interview_preparation_kit/recursion_and_backtracking/ctci_fibonacci_numbers.js
index 73f7a31b..2d331d76 100644
--- a/src/hackerrank/interview_preparation_kit/recursion_and_backtracking/ctci_fibonacci_numbers.js
+++ b/src/hackerrank/interview_preparation_kit/recursion_and_backtracking/ctci_fibonacci_numbers.js
@@ -2,7 +2,7 @@
  * @link Problem definition [[docs/hackerrank/interview_preparation_kit/recursion_and_backtracking/ctci_fibonacci_numbers.md]]
  */
 
-export function fibonacci(n) {
+function fibonacci(n) {
   if (n === 0) {
     return 0;
   }
@@ -14,3 +14,4 @@ export function fibonacci(n) {
 }
 
 export default { fibonacci };
+export { fibonacci };
diff --git a/src/hackerrank/interview_preparation_kit/recursion_and_backtracking/ctci_recursive_staircase.js b/src/hackerrank/interview_preparation_kit/recursion_and_backtracking/ctci_recursive_staircase.js
index 4c7c7a32..0c635d14 100644
--- a/src/hackerrank/interview_preparation_kit/recursion_and_backtracking/ctci_recursive_staircase.js
+++ b/src/hackerrank/interview_preparation_kit/recursion_and_backtracking/ctci_recursive_staircase.js
@@ -6,7 +6,7 @@
 const TOP_LIMIT = 10 ** 10 + 7;
 const STEPSLIMIT = 3;
 
-export class StepPerms {
+class StepPerms {
   TOP_LIMIT = 1;
 
   STEPS_LIMIT = 1;
@@ -39,10 +39,11 @@ export class StepPerms {
   }
 }
 
-export function stepPerms(n) {
+function stepPerms(n) {
   const stairs = new StepPerms(TOP_LIMIT, STEPSLIMIT);
 
   return stairs.stepPermsComputWithCache(n) % TOP_LIMIT;
 }
 
 export default { stepPerms, StepPerms };
+export { stepPerms, StepPerms };
diff --git a/src/hackerrank/interview_preparation_kit/recursion_and_backtracking/recursive_digit_sum.js b/src/hackerrank/interview_preparation_kit/recursion_and_backtracking/recursive_digit_sum.js
index ced86843..68e0cd16 100644
--- a/src/hackerrank/interview_preparation_kit/recursion_and_backtracking/recursive_digit_sum.js
+++ b/src/hackerrank/interview_preparation_kit/recursion_and_backtracking/recursive_digit_sum.js
@@ -4,7 +4,7 @@
 
 const RADIX = 10;
 
-export function superDigitCompute(n) {
+function superDigitCompute(n) {
   if (n.length === 1) {
     return parseInt(n, RADIX);
   }
@@ -17,7 +17,7 @@ export function superDigitCompute(n) {
   return superDigitCompute(`${partial}`);
 }
 
-export function superDigit(n, k) {
+function superDigit(n, k) {
   const accumulator = `${superDigitCompute(n)}`;
 
   let result = '';
@@ -29,3 +29,4 @@ export function superDigit(n, k) {
 }
 
 export default { superDigit };
+export { superDigit };
diff --git a/src/hackerrank/interview_preparation_kit/search/ctci_ice_cream_parlor.js b/src/hackerrank/interview_preparation_kit/search/ctci_ice_cream_parlor.js
index ce28178b..9c9603c8 100644
--- a/src/hackerrank/interview_preparation_kit/search/ctci_ice_cream_parlor.js
+++ b/src/hackerrank/interview_preparation_kit/search/ctci_ice_cream_parlor.js
@@ -2,7 +2,7 @@
  * @link Problem definition [[docs/hackerrank/interview_preparation_kit/search/ctci-ice-cream-parlor.md]]
  */
 
-export function whatFlavorsCompute(cost, money) {
+function whatFlavorsCompute(cost, money) {
   const cache = {};
   const RADIX = 10;
 
@@ -20,8 +20,9 @@ export function whatFlavorsCompute(cost, money) {
   return [];
 }
 
-export function whatFlavors(cost, money) {
+function whatFlavors(cost, money) {
   console.log(whatFlavorsCompute(cost, money)?.join(' '));
 }
 
 export default { whatFlavorsCompute, whatFlavors };
+export { whatFlavorsCompute, whatFlavors };
diff --git a/src/hackerrank/interview_preparation_kit/search/ctci_ice_cream_parlor_bruteforce.js b/src/hackerrank/interview_preparation_kit/search/ctci_ice_cream_parlor_bruteforce.js
index 5eafcbb3..631c99be 100644
--- a/src/hackerrank/interview_preparation_kit/search/ctci_ice_cream_parlor_bruteforce.js
+++ b/src/hackerrank/interview_preparation_kit/search/ctci_ice_cream_parlor_bruteforce.js
@@ -2,7 +2,7 @@
  * @link Problem definition [[docs/hackerrank/interview_preparation_kit/search/ctci-ice-cream-parlor.md]]
  */
 
-export function whatFlavorsBruteforceCompute(cost, money) {
+function whatFlavorsBruteforceCompute(cost, money) {
   const RADIX = 10;
 
   for (const key of Object.keys(cost)) {
@@ -22,8 +22,9 @@ export function whatFlavorsBruteforceCompute(cost, money) {
   return [];
 }
 
-export function whatFlavors(cost, money) {
+function whatFlavors(cost, money) {
   console.log(whatFlavorsBruteforceCompute(cost, money)?.join(' '));
 }
 
 export default { whatFlavorsBruteforceCompute, whatFlavors };
+export { whatFlavorsBruteforceCompute, whatFlavors };
diff --git a/src/hackerrank/interview_preparation_kit/search/ctci_ice_cream_parlor_optimized.js b/src/hackerrank/interview_preparation_kit/search/ctci_ice_cream_parlor_optimized.js
index 95a313dc..8378c84a 100644
--- a/src/hackerrank/interview_preparation_kit/search/ctci_ice_cream_parlor_optimized.js
+++ b/src/hackerrank/interview_preparation_kit/search/ctci_ice_cream_parlor_optimized.js
@@ -2,7 +2,7 @@
  * @link Problem definition [[docs/hackerrank/interview_preparation_kit/search/ctci-ice-cream-parlor.md]]
  */
 
-export function whatFlavorsCompute(cost, money) {
+function whatFlavorsCompute(cost, money) {
   let ans1;
   let ans2;
 
@@ -44,8 +44,9 @@ export function whatFlavorsCompute(cost, money) {
   return Array.from(result);
 }
 
-export function whatFlavors(cost, money) {
+function whatFlavors(cost, money) {
   console.log(whatFlavorsCompute(cost, money)?.join(' '));
 }
 
 export default { whatFlavorsCompute, whatFlavors };
+export { whatFlavorsCompute, whatFlavors };
diff --git a/src/hackerrank/interview_preparation_kit/search/swap_nodes_algo.js b/src/hackerrank/interview_preparation_kit/search/swap_nodes_algo.js
index c2d8ca51..386cf355 100644
--- a/src/hackerrank/interview_preparation_kit/search/swap_nodes_algo.js
+++ b/src/hackerrank/interview_preparation_kit/search/swap_nodes_algo.js
@@ -1,16 +1,16 @@
 /**
- * @link Problem export functioninition [[docs/hackerrank/interview_preparation_kit/search/swap-nodes-algo.md]]
+ * @link Problem definition [[docs/hackerrank/interview_preparation_kit/search/swap-nodes-algo.md]]
  */
 
 import { Node } from '../../lib/Node.js';
 
 // CONSTANTS
-export const __INITIAL_LEVEL__ = 1;
-export const __ROOT_VALUE__ = 1;
-export const __LEAF_VALUE__ = -1;
+const __INITIAL_LEVEL__ = 1;
+const __ROOT_VALUE__ = 1;
+const __LEAF_VALUE__ = -1;
 const __RADIX__ = 10;
 
-export class Tree {
+class Tree {
   root;
 
   nodeCollector;
@@ -97,7 +97,7 @@ export class Tree {
   }
 }
 
-export function swapNodes(indexes, queries) {
+function swapNodes(indexes, queries) {
   const tree = new Tree(indexes);
   let nodeCollector = tree.getCollector();
   const output = [];
@@ -126,4 +126,5 @@ export function swapNodes(indexes, queries) {
   return output;
 }
 
-export default { swapNodes, __INITIAL_LEVEL__ };
+export default { swapNodes, Tree, __INITIAL_LEVEL__ };
+export { swapNodes, Tree, __INITIAL_LEVEL__ };
diff --git a/src/hackerrank/interview_preparation_kit/sort/ctci_bubble_sort.js b/src/hackerrank/interview_preparation_kit/sort/ctci_bubble_sort.js
index 757ab24d..b5c4af8c 100644
--- a/src/hackerrank/interview_preparation_kit/sort/ctci_bubble_sort.js
+++ b/src/hackerrank/interview_preparation_kit/sort/ctci_bubble_sort.js
@@ -4,7 +4,7 @@
 
 const SEPARATOR = '\n';
 
-export class SortableGroup {
+class SortableGroup {
   group;
 
   count;
@@ -38,7 +38,7 @@ export class SortableGroup {
   }
 }
 
-export function countSwaps(a) {
+function countSwaps(a) {
   const sortableGroup = new SortableGroup(a);
   sortableGroup.bubble_sort();
 
@@ -53,3 +53,4 @@ export function countSwaps(a) {
 }
 
 export default { countSwaps, SortableGroup };
+export { countSwaps, SortableGroup };
diff --git a/src/hackerrank/interview_preparation_kit/sort/ctci_comparator_sorting.Player.js b/src/hackerrank/interview_preparation_kit/sort/ctci_comparator_sorting.Player.js
index cfc6bef6..4476e7f7 100644
--- a/src/hackerrank/interview_preparation_kit/sort/ctci_comparator_sorting.Player.js
+++ b/src/hackerrank/interview_preparation_kit/sort/ctci_comparator_sorting.Player.js
@@ -1,6 +1,6 @@
 // Start Given code
 
-export class Player {
+class Player {
   name = '';
 
   score = 0;
@@ -18,3 +18,4 @@ export class Player {
 // End Given code
 
 export default { Player };
+export { Player };
diff --git a/src/hackerrank/interview_preparation_kit/sort/ctci_comparator_sorting.js b/src/hackerrank/interview_preparation_kit/sort/ctci_comparator_sorting.js
index 0ddfed6a..d0e903f7 100644
--- a/src/hackerrank/interview_preparation_kit/sort/ctci_comparator_sorting.js
+++ b/src/hackerrank/interview_preparation_kit/sort/ctci_comparator_sorting.js
@@ -4,7 +4,7 @@
 
 import { Player } from './ctci_comparator_sorting.Player.js';
 
-export class SortablePlayer extends Player {
+class SortablePlayer extends Player {
   name = '';
 
   score = 0;
@@ -34,14 +34,20 @@ export class SortablePlayer extends Player {
   }
 }
 
-export function comparatorSorting(players) {
+function comparatorSorting(players) {
   const sortedPlayers = [...players].sort((a, b) => a.comparator(b));
 
   return sortedPlayers.map((player) => player.toString());
 }
 
-export function comparatorSortingPrint(players) {
+function comparatorSortingPrint(players) {
   console.log(comparatorSorting(players)?.join('\n'));
 }
 
-export default { Player, SortablePlayer, comparatorSorting };
+export default {
+  Player,
+  SortablePlayer,
+  comparatorSorting,
+  comparatorSortingPrint
+};
+export { Player, SortablePlayer, comparatorSorting, comparatorSortingPrint };
diff --git a/src/hackerrank/interview_preparation_kit/sort/mark_and_toys.js b/src/hackerrank/interview_preparation_kit/sort/mark_and_toys.js
index a33999ae..1b862b43 100644
--- a/src/hackerrank/interview_preparation_kit/sort/mark_and_toys.js
+++ b/src/hackerrank/interview_preparation_kit/sort/mark_and_toys.js
@@ -2,7 +2,7 @@
  * @link Problem definition [[docs/hackerrank/interview_preparation_kit/sort/mark-and-toys.md]]
  */
 
-export function maximumToys(prices, k) {
+function maximumToys(prices, k) {
   const group = [...prices];
   group.sort((a, b) => a - b);
 
@@ -21,3 +21,4 @@ export function maximumToys(prices, k) {
 }
 
 export default { maximumToys };
+export { maximumToys };
diff --git a/src/hackerrank/interview_preparation_kit/stacks_and_queues/balanced_brackets.js b/src/hackerrank/interview_preparation_kit/stacks_and_queues/balanced_brackets.js
index 921b21c4..6f9bf529 100644
--- a/src/hackerrank/interview_preparation_kit/stacks_and_queues/balanced_brackets.js
+++ b/src/hackerrank/interview_preparation_kit/stacks_and_queues/balanced_brackets.js
@@ -5,7 +5,7 @@
 const __YES__ = 'YES';
 const __NO__ = 'NO';
 
-export function isBalancedCompute(s) {
+function isBalancedCompute(s) {
   const pairs = { '{': '}', '(': ')', '[': ']' };
   const brackets = [];
 
@@ -27,8 +27,9 @@ export function isBalancedCompute(s) {
   return brackets.length <= 0;
 }
 
-export function isBalanced(s) {
+function isBalanced(s) {
   return isBalancedCompute(s) ? __YES__ : __NO__;
 }
 
 export default { isBalanced };
+export { isBalanced };
diff --git a/src/hackerrank/interview_preparation_kit/string_manipulation/alternating_characters.js b/src/hackerrank/interview_preparation_kit/string_manipulation/alternating_characters.js
index 1645feef..1738ef8b 100644
--- a/src/hackerrank/interview_preparation_kit/string_manipulation/alternating_characters.js
+++ b/src/hackerrank/interview_preparation_kit/string_manipulation/alternating_characters.js
@@ -2,7 +2,7 @@
  * @link Problem definition [[docs/hackerrank/interview_preparation_kit/string_manipulation/alternating-characters.md]]
  */
 
-export function alternatingCharacters(s) {
+function alternatingCharacters(s) {
   let last = '';
   let newString = '';
 
@@ -18,3 +18,4 @@ export function alternatingCharacters(s) {
 }
 
 export default { alternatingCharacters };
+export { alternatingCharacters };
diff --git a/src/hackerrank/interview_preparation_kit/string_manipulation/ctci_making_anagrams.js b/src/hackerrank/interview_preparation_kit/string_manipulation/ctci_making_anagrams.js
index 60db8a61..9a76b3f7 100644
--- a/src/hackerrank/interview_preparation_kit/string_manipulation/ctci_making_anagrams.js
+++ b/src/hackerrank/interview_preparation_kit/string_manipulation/ctci_making_anagrams.js
@@ -19,7 +19,7 @@ function sum(values) {
   );
 }
 
-export function makeAnagram(a, b) {
+function makeAnagram(a, b) {
   const aMap = charToDicMap(a);
   const bMap = charToDicMap(b);
 
@@ -34,3 +34,4 @@ export function makeAnagram(a, b) {
 }
 
 export default { makeAnagram };
+export { makeAnagram };
diff --git a/src/hackerrank/interview_preparation_kit/string_manipulation/sherlock_and_valid_string.js b/src/hackerrank/interview_preparation_kit/string_manipulation/sherlock_and_valid_string.js
index e2da4dc3..7e68561a 100644
--- a/src/hackerrank/interview_preparation_kit/string_manipulation/sherlock_and_valid_string.js
+++ b/src/hackerrank/interview_preparation_kit/string_manipulation/sherlock_and_valid_string.js
@@ -5,7 +5,7 @@
 const __YES__ = 'YES';
 const __NO__ = 'NO';
 
-export function isValidCompute(s) {
+function isValidCompute(s) {
   if (s.length <= 1) {
     return true;
   }
@@ -48,8 +48,9 @@ export function isValidCompute(s) {
   return false;
 }
 
-export function isValid(s) {
+function isValid(s) {
   return isValidCompute(s) ? __YES__ : __NO__;
 }
 
 export default { isValid };
+export { isValid };
diff --git a/src/hackerrank/lib/BigIntMath.js b/src/hackerrank/lib/BigIntMath.js
index 2dc6966b..52e4f8eb 100644
--- a/src/hackerrank/lib/BigIntMath.js
+++ b/src/hackerrank/lib/BigIntMath.js
@@ -1,6 +1,6 @@
 /* istanbul ignore file */
 
-export class BigIntMath {
+class BigIntMath {
   static max(...values) {
     if (values.length === 0) {
       return null;
@@ -79,3 +79,4 @@ export class BigIntMath {
 }
 
 export default { BigIntMath };
+export { BigIntMath };
diff --git a/src/hackerrank/lib/Node.js b/src/hackerrank/lib/Node.js
index 45290a12..12db1ec1 100644
--- a/src/hackerrank/lib/Node.js
+++ b/src/hackerrank/lib/Node.js
@@ -1,6 +1,6 @@
 /* istanbul ignore file */
 
-export class Node {
+class Node {
   left;
 
   right;
@@ -15,3 +15,4 @@ export class Node {
 }
 
 export default { Node };
+export { Node };
diff --git a/src/hackerrank/projecteuler/euler001.js b/src/hackerrank/projecteuler/euler001.js
index 23ced128..f096a8d9 100644
--- a/src/hackerrank/projecteuler/euler001.js
+++ b/src/hackerrank/projecteuler/euler001.js
@@ -3,12 +3,12 @@
  */
 
 // Function to return gcd of a and b
-export function gcd(a, b) {
+function gcd(a, b) {
   if (a === 0) return b;
   return gcd(b % a, a);
 }
 
-export function sumAp(n, d) {
+function sumAp(n, d) {
   // Number of terms
   const _n = Math.floor(n / d);
 
@@ -16,10 +16,13 @@ export function sumAp(n, d) {
 }
 
 // Function to find the sum of all multiples of a and b below n
-export function euler001(a, b, n) {
+function euler001(a, b, n) {
   // Since, we need the sum of multiples less than N
   const _n = n - 1;
   const lcm = Math.floor((a * b) / gcd(a, b));
 
   return sumAp(_n, a) + sumAp(_n, b) - sumAp(_n, lcm);
 }
+
+export default { euler001 };
+export { euler001 };
diff --git a/src/hackerrank/projecteuler/euler002.js b/src/hackerrank/projecteuler/euler002.js
index 316d0cf5..f1267823 100644
--- a/src/hackerrank/projecteuler/euler002.js
+++ b/src/hackerrank/projecteuler/euler002.js
@@ -2,7 +2,7 @@
  * @link Problem definition [[docs/hackerrank/projecteuler/euler002.md]]
  */
 
-export function fiboEvenSum(n) {
+function fiboEvenSum(n) {
   let fibo1 = 1n;
   let fibo2 = 1n;
   let total = 0n;
@@ -20,8 +20,9 @@ export function fiboEvenSum(n) {
   return total;
 }
 
-export function euler002(n) {
+function euler002(n) {
   return fiboEvenSum(n);
 }
 
 export default { euler002 };
+export { euler002 };
diff --git a/src/hackerrank/projecteuler/euler003.js b/src/hackerrank/projecteuler/euler003.js
index dd3ebf88..e390f2a9 100644
--- a/src/hackerrank/projecteuler/euler003.js
+++ b/src/hackerrank/projecteuler/euler003.js
@@ -4,7 +4,7 @@
 
 import { BigIntMath } from '../lib/BigIntMath.js';
 
-export function primeFactor(n) {
+function primeFactor(n) {
   if (n < 2) {
     throw new Error('n must be greater than 2');
   }
@@ -26,8 +26,9 @@ export function primeFactor(n) {
   return maxPrimeFactor;
 }
 
-export function euler003(n) {
+function euler003(n) {
   return primeFactor(BigInt(n));
 }
 
 export default { euler003 };
+export { euler003 };
diff --git a/src/hackerrank/warmup/aVeryBigSum.js b/src/hackerrank/warmup/aVeryBigSum.js
index 0f99ade6..6d84283e 100644
--- a/src/hackerrank/warmup/aVeryBigSum.js
+++ b/src/hackerrank/warmup/aVeryBigSum.js
@@ -2,7 +2,7 @@
  * @link Problem definition [[docs/hackerrank/warmup/aVeryBigSum.md]]
  */
 
-export function aVeryBigSum(ar) {
+function aVeryBigSum(ar) {
   let result = 0;
 
   for (const num of ar) {
@@ -13,3 +13,4 @@ export function aVeryBigSum(ar) {
 }
 
 export default { aVeryBigSum };
+export { aVeryBigSum };
diff --git a/src/hackerrank/warmup/birthdayCakeCandles.js b/src/hackerrank/warmup/birthdayCakeCandles.js
index dbbf503f..bb727de0 100644
--- a/src/hackerrank/warmup/birthdayCakeCandles.js
+++ b/src/hackerrank/warmup/birthdayCakeCandles.js
@@ -2,7 +2,7 @@
  * @link Problem definition [[docs/hackerrank/warmup/birthdayCakeCandles.md]]
  */
 
-export function birthdayCakeCandles(ar) {
+function birthdayCakeCandles(ar) {
   if (ar.length === 0) {
     throw new Error('Empty input');
   }
@@ -23,3 +23,4 @@ export function birthdayCakeCandles(ar) {
 }
 
 export default { birthdayCakeCandles };
+export { birthdayCakeCandles };
diff --git a/src/hackerrank/warmup/compareTriplets.js b/src/hackerrank/warmup/compareTriplets.js
index 4241856c..9f905c44 100644
--- a/src/hackerrank/warmup/compareTriplets.js
+++ b/src/hackerrank/warmup/compareTriplets.js
@@ -2,7 +2,7 @@
  * @link Problem definition [[docs/hackerrank/warmup/compareTriplets.md]]
  */
 
-export function compareTriplets(a, b) {
+function compareTriplets(a, b) {
   const awards = [0, 0];
 
   if (a.length !== b.length) {
@@ -21,3 +21,4 @@ export function compareTriplets(a, b) {
 }
 
 export default { compareTriplets };
+export { compareTriplets };
diff --git a/src/hackerrank/warmup/diagonalDifference.js b/src/hackerrank/warmup/diagonalDifference.js
index e48fa92a..56378528 100644
--- a/src/hackerrank/warmup/diagonalDifference.js
+++ b/src/hackerrank/warmup/diagonalDifference.js
@@ -4,7 +4,7 @@
 
 import { logger as console } from '../../logger.js';
 
-export function diagonalDifference(arr) {
+function diagonalDifference(arr) {
   let diag1 = 0;
   let diag2 = 0;
   const last = arr.length - 1;
@@ -24,3 +24,4 @@ export function diagonalDifference(arr) {
 }
 
 export default { diagonalDifference };
+export { diagonalDifference };
diff --git a/src/hackerrank/warmup/miniMaxSum.js b/src/hackerrank/warmup/miniMaxSum.js
index dc792bb4..000d00b7 100644
--- a/src/hackerrank/warmup/miniMaxSum.js
+++ b/src/hackerrank/warmup/miniMaxSum.js
@@ -2,7 +2,7 @@
  * @link Problem definition [[docs/hackerrank/warmup/miniMaxSum.md]]
  */
 
-export function miniMaxSum(arr) {
+function miniMaxSum(arr) {
   if (arr.length === 0) {
     throw new Error('Empty input');
   }
@@ -27,3 +27,4 @@ export function miniMaxSum(arr) {
 }
 
 export default { miniMaxSum };
+export { miniMaxSum };
diff --git a/src/hackerrank/warmup/plusMinus.js b/src/hackerrank/warmup/plusMinus.js
index b67c7bb3..6a19869a 100644
--- a/src/hackerrank/warmup/plusMinus.js
+++ b/src/hackerrank/warmup/plusMinus.js
@@ -2,7 +2,7 @@
  * @link Problem definition [[docs/hackerrank/warmup/plusMinus.md]]
  */
 
-export function plusMinus(arr) {
+function plusMinus(arr) {
   let positives = 0;
   let negatives = 0;
   let zeros = 0;
@@ -27,3 +27,4 @@ export function plusMinus(arr) {
 }
 
 export default { plusMinus };
+export { plusMinus };
diff --git a/src/hackerrank/warmup/simpleArraySum.js b/src/hackerrank/warmup/simpleArraySum.js
index be7376f7..feec4e68 100644
--- a/src/hackerrank/warmup/simpleArraySum.js
+++ b/src/hackerrank/warmup/simpleArraySum.js
@@ -2,7 +2,7 @@
  * @link Problem definition [[docs/hackerrank/warmup/simpleArraySum.md]]
  */
 
-export function simpleArraySum(ar) {
+function simpleArraySum(ar) {
   let acum = 0;
 
   for (const num of ar) {
@@ -13,3 +13,4 @@ export function simpleArraySum(ar) {
 }
 
 export default { simpleArraySum };
+export { simpleArraySum };
diff --git a/src/hackerrank/warmup/solveMeFirst.js b/src/hackerrank/warmup/solveMeFirst.js
index 41ad7102..649f2921 100644
--- a/src/hackerrank/warmup/solveMeFirst.js
+++ b/src/hackerrank/warmup/solveMeFirst.js
@@ -2,7 +2,7 @@
  * @link Problem definition [[docs/hackerrank/warmup/solveMeFirst.md]]
  */
 
-export function solveMeFirst(inputLines) {
+function solveMeFirst(inputLines) {
   let result = 0;
   const radix = 10;
 
@@ -14,3 +14,4 @@ export function solveMeFirst(inputLines) {
 }
 
 export default { solveMeFirst };
+export { solveMeFirst };
diff --git a/src/hackerrank/warmup/staircase.js b/src/hackerrank/warmup/staircase.js
index 8b6b4ad0..707e00f9 100644
--- a/src/hackerrank/warmup/staircase.js
+++ b/src/hackerrank/warmup/staircase.js
@@ -2,7 +2,7 @@
  * @link Problem definition [[docs/hackerrank/warmup/staircase.md]]
  */
 
-export function staircase(n) {
+function staircase(n) {
   const result = [];
 
   for (let i = 1; i <= n; i++) {
@@ -23,3 +23,4 @@ export function staircase(n) {
 }
 
 export default { staircase };
+export { staircase };
diff --git a/src/hackerrank/warmup/timeConversion.js b/src/hackerrank/warmup/timeConversion.js
index 368bd56c..bf85e3cb 100644
--- a/src/hackerrank/warmup/timeConversion.js
+++ b/src/hackerrank/warmup/timeConversion.js
@@ -2,7 +2,7 @@
  * @link Problem definition [[docs/hackerrank/warmup/timeConversion.md]]
  */
 
-export function timeConversion(s) {
+function timeConversion(s) {
   let meridian = s.substring(s.length - 2, s.length);
   meridian = meridian.toLowerCase();
 
@@ -26,3 +26,4 @@ export function timeConversion(s) {
 }
 
 export default { timeConversion };
+export { timeConversion };
diff --git a/src/problem0000.js b/src/problem0000.js
index 2dee8fe4..83a9502f 100644
--- a/src/problem0000.js
+++ b/src/problem0000.js
@@ -6,7 +6,7 @@
 
 import { logger as console } from './logger.js';
 
-export function problem0000() {
+function problem0000() {
   const result = null;
 
   console.log(`result ${String(result)}`);
@@ -15,3 +15,4 @@ export function problem0000() {
 }
 
 export default { problem0000 };
+export { problem0000 };
diff --git a/src/projecteuler/problem0017.js b/src/projecteuler/problem0017.js
index 7ed41d21..dd150124 100644
--- a/src/projecteuler/problem0017.js
+++ b/src/projecteuler/problem0017.js
@@ -5,7 +5,7 @@
 import { logger as console } from '../logger.js';
 import { numberToWord } from './helpers/index.js';
 
-export default function problem0017(init, last) {
+function problem0017(init, last) {
   let replaced;
   let word;
   let acum = 0;
@@ -24,4 +24,5 @@ export default function problem0017(init, last) {
   return acum;
 }
 
+export default { problem0017 };
 export { problem0017 };
diff --git a/src/projecteuler/problem0018.js b/src/projecteuler/problem0018.js
index 15075b8e..bff25afc 100644
--- a/src/projecteuler/problem0018.js
+++ b/src/projecteuler/problem0018.js
@@ -7,7 +7,7 @@ import { logger as console } from '../logger.js';
 const rootCoordinateI = 0;
 const rootCoordinateJ = 0;
 
-export function problem0018(_triangle) {
+function problem0018(_triangle) {
   console.debug('_triangle', _triangle);
   console.debug(
     '_triangle',
@@ -33,3 +33,4 @@ export function problem0018(_triangle) {
 }
 
 export default { problem0018 };
+export { problem0018 };
diff --git a/src/projecteuler/problem0019.js b/src/projecteuler/problem0019.js
index 277ec383..b5647ad2 100644
--- a/src/projecteuler/problem0019.js
+++ b/src/projecteuler/problem0019.js
@@ -6,7 +6,7 @@ import { daysInMonth, __SUNDAY__ } from '../constants/index.js';
 
 const __FEBRUARY__KEY__ = 'FEBRUARY';
 
-export function problem0019(
+function problem0019(
   _dayOfWeek = __SUNDAY__,
   _sinceYear = 1901,
   _untilYear = 2000
@@ -44,3 +44,4 @@ export function problem0019(
 }
 
 export default { problem0019 };
+export { problem0019 };
diff --git a/src/projecteuler/problem0020.js b/src/projecteuler/problem0020.js
index a9c1baa1..b457e4a1 100644
--- a/src/projecteuler/problem0020.js
+++ b/src/projecteuler/problem0020.js
@@ -13,7 +13,7 @@ import { logger as console } from '../logger.js';
 
 import { bigFactorial, bigSumMany } from './helpers/bigNumbers.js';
 
-export function problem0020(_limit) {
+function problem0020(_limit) {
   const strFactorial = bigFactorial(_limit);
 
   console.log(`Factorial of ${_limit}!:`, strFactorial);
@@ -24,3 +24,4 @@ export function problem0020(_limit) {
 }
 
 export default { problem0020 };
+export { problem0020 };
diff --git a/src/projecteuler/problem0021.js b/src/projecteuler/problem0021.js
index 7feb12a2..c6309665 100644
--- a/src/projecteuler/problem0021.js
+++ b/src/projecteuler/problem0021.js
@@ -19,7 +19,7 @@ import { logger as console } from '../logger.js';
 
 import { divisors, bigSumMany } from './helpers/index.js';
 
-export function problem0021(_start, _limit) {
+function problem0021(_start, _limit) {
   const data = {};
 
   for (let i = _start; i <= _limit; i++) {
@@ -49,3 +49,4 @@ export function problem0021(_start, _limit) {
 }
 
 export default { problem0021 };
+export { problem0021 };
diff --git a/src/projecteuler/problem0022.js b/src/projecteuler/problem0022.js
index 67cbfa4b..197c903c 100644
--- a/src/projecteuler/problem0022.js
+++ b/src/projecteuler/problem0022.js
@@ -5,7 +5,7 @@
 import { logger as console } from '../logger.js';
 import { wordScore } from './helpers/wordScore.js';
 
-export function problem0022(listOfNames) {
+function problem0022(listOfNames) {
   listOfNames.sort((a, b) => a.localeCompare(b));
 
   let result = 0;
@@ -21,3 +21,4 @@ export function problem0022(listOfNames) {
 }
 
 export default { problem0022 };
+export { problem0022 };
diff --git a/src/projecteuler/problem0023.js b/src/projecteuler/problem0023.js
index a34c67f7..82d543a3 100644
--- a/src/projecteuler/problem0023.js
+++ b/src/projecteuler/problem0023.js
@@ -5,7 +5,7 @@
 import { logger as console } from '../logger.js';
 import { abundance, ___DIVISORS_ABUNDANT___, sum } from './helpers/index.js';
 
-export function problem0023(_underLimit, _superLimit) {
+function problem0023(_underLimit, _superLimit) {
   const allNumsList = [];
   const abundantNumberList = [];
 
@@ -64,3 +64,4 @@ export function problem0023(_underLimit, _superLimit) {
 }
 
 export default { problem0023 };
+export { problem0023 };
diff --git a/src/projecteuler/problem0024.js b/src/projecteuler/problem0024.js
index 6d5e45fd..c25821fb 100644
--- a/src/projecteuler/problem0024.js
+++ b/src/projecteuler/problem0024.js
@@ -34,7 +34,7 @@ const permute = (symbols, target) => {
   return answer;
 };
 
-export function problem0024(inputElements, inputPermutationToFind) {
+function problem0024(inputElements, inputPermutationToFind) {
   const permutationFound = permute(inputElements, inputPermutationToFind);
 
   console.debug(`result ${String(permutationFound)}`);
@@ -43,3 +43,4 @@ export function problem0024(inputElements, inputPermutationToFind) {
 }
 
 export default { problem0024 };
+export { problem0024 };
diff --git a/src/projecteuler/problem0025.js b/src/projecteuler/problem0025.js
index feeefb4d..1abd6af6 100644
--- a/src/projecteuler/problem0025.js
+++ b/src/projecteuler/problem0025.js
@@ -5,7 +5,7 @@
 import { logger as console } from '../logger.js';
 import { bigNum, bigSum, bigNumToString } from './helpers/index.js';
 
-export function problem0025(_top) {
+function problem0025(_top) {
   let last1 = bigNum('1');
   let last2 = bigNum('1');
   let counter = 2;
@@ -26,3 +26,4 @@ export function problem0025(_top) {
 }
 
 export default { problem0025 };
+export { problem0025 };