Merge pull request #132 from MannyP31/manny

Added some more js programs

Author: smv1999

Hackerrank solutions/10 days of js/Arrow_functions.js

@@ -0,0 +1,49 @@
+'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++];
+}
+
+/*
+ * Modify and return the array so that all even elements are doubled and all odd elements are tripled.
+ * 
+ * Parameter(s):
+ * nums: An array of numbers.
+ */
+function modifyArray(nums) {
+    var something=function(n){
+        if(n%2==0)
+           return n*2;
+        else
+           return n*3;
+        
+    }
+    var newArray=nums.map(something);
+    return newArray;
+}
+
+
+function main() {
+    const n = +(readLine());
+    const a = readLine().split(' ').map(Number);
+    
+    console.log(modifyArray(a).toString().split(',').join(' '));
+}

Hackerrank solutions/10 days of js/Bitwise_Operators.js

@@ -0,0 +1,38 @@
+'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 getMaxLessThanK(n,k)
+{
+    let max=0
+    for(let i=1;i<n;i++)
+    for(let j=i+1;j<=n;j++)
+    {
+        let and=i&j
+        
+        if(and<k && and>max)
+           max=and
+    }
+    return max
+}
+

Hackerrank solutions/10 days of js/Inheritance.js

@@ -0,0 +1,24 @@
+class Rectangle {
+    constructor(w, h) {
+        this.w = w;
+        this.h = h;
+    }
+}
+
+/*
+ *  Write code that adds an 'area' method to the Rectangle class' prototype
+ */
+Rectangle.prototype.area= function(){
+     return this.w * this.h;
+}
+/*
+ * Create a Square class that inherits from Rectangle and implement its class constructor
+ */
+//inherit from rectangle
+class Square extends Rectangle {
+    //create Square constructor
+    constructor (a){
+        //call constructor from Rectangle class and insert value
+        super (a,a);
+    }
+}