Merge pull request #118 from MannyP31/manny

Added hackerrank solutions.

Author: smv1999

Hackerrank solutions/10 days of js/Arithmatic_operator.js

@@ -0,0 +1,39 @@
+/**
+*   Calculate the area of a rectangle.
+*
+*   length: The length of the rectangle.
+*   width: The width of the rectangle.
+*   
+*	Return a number denoting the rectangle's area.
+**/
+function getArea(length, width) {
+    let area;
+    // Write your code here
+    area=length*width
+    return area;
+    
+}
+
+/**
+*   Calculate the perimeter of a rectangle.
+*	
+*	length: The length of the rectangle.
+*   width: The width of the rectangle.
+*   
+*	Return a number denoting the perimeter of a rectangle.
+**/
+function getPerimeter(length, width) {
+    let perimeter;
+    // Write your code here
+    perimeter=2*(length+width)
+    return perimeter;
+}
+
+
+function main() {
+    const length = +(readLine());
+    const width = +(readLine());
+    
+    console.log(getArea(length, width));
+    console.log(getPerimeter(length, width));
+}

Hackerrank solutions/10 days of js/Conditional_statement_(if-else).js

@@ -0,0 +1,35 @@
+'use strict';
+
+process.stdin.resume();
+process.stdin.setEncoding('utf-8');
+
+let inputString = '';
+let currentLine = 0;
+
+process.stdin.on('data', inputStdin => {
+    inputString += inputStdin;
+});
+
+process.stdin.on('end', _ => {
+    inputString = inputString.trim().split('\n').map(string => {
+        return string.trim();
+    });
+    
+    main();    
+});
+
+function readLine() {
+    return inputString[currentLine++];
+}
+
+function getGrade(score) {
+    return 'FEDCBA'[parseInt((score > 0 ? score - 1 : 0) / 5)];
+}
+
+
+
+function main() {
+    const score = +(readLine());
+    
+    console.log(getGrade(score));
+}

Hackerrank solutions/10 days of js/Functions.js

@@ -0,0 +1,40 @@
+'use strict';
+
+process.stdin.resume();
+process.stdin.setEncoding('utf-8');
+
+let inputString = '';
+let currentLine = 0;
+
+process.stdin.on('data', inputStdin => {
+    inputString += inputStdin;
+});
+
+process.stdin.on('end', _ => {
+    inputString = inputString.trim().split('\n').map(string => {
+        return string.trim();
+    });
+    
+    main();    
+});
+
+function readLine() {
+    return inputString[currentLine++];
+}
+/*
+ * Create the function factorial here
+ */
+function factorial(n){
+    let finalVal=1;
+    for (let i=n; i>1; i--){
+      finalVal *=i;
+    }
+    return finalVal;
+}
+
+
+function main() {
+    const n = +(readLine());
+    
+    console.log(factorial(n));
+}

Hackerrank solutions/10 days of js/Let_and_const.js

@@ -0,0 +1,47 @@
+'use strict';
+
+process.stdin.resume();
+process.stdin.setEncoding('utf-8');
+
+let inputString = '';
+let currentLine = 0;
+
+process.stdin.on('data', inputStdin => {
+    inputString += inputStdin;
+});
+
+process.stdin.on('end', _ => {
+    inputString = inputString.trim().split('\n').map(string => {
+        return string.trim();
+    });
+    
+    main();    
+});
+
+function readLine() {
+    return inputString[currentLine++];
+}
+
+function main() {
+    // Write your code here. Read input using 'readLine()' and print output using 'console.log()'.
+    
+    // Print the area of the circle:
+    
+    // Print the perimeter of the circle:
+    let r = readLine();
+const PI = Math.PI;
+
+// Print the area of the circle:
+console.log(PI*r*r);
+// Print the perimeter of the circle:
+console.log(PI*2*r);
+
+    try {    
+        // Attempt to redefine the value of constant variable PI
+        PI = 0;
+        // Attempt to print the value of PI
+        console.log(PI);
+    } catch(error) {
+        console.error("You correctly declared 'PI' as a constant.");
+    }
+}