Let’s say, we are required to write a String.prototype function that takes in three arguments.First argument is string that should be searched for substringsSecond argument is the string, the occurrence of which String to be removedThird argument is a Number say n, nth occurrence of substring to be removed from string.The ... Read More

Let’s say, we are required to write a JavaScript function that takes in a number, say n, and returns an array containing all the prime numbers upto n.For example − If the number n is 24, then the output should be −const output = [2, 3, 5, 7, 11, 13, ... Read More

Let’s say, we have an array of arrays of boolean like this −const arr = [[true, false, false], [false, false, false], [false, false, true]];We are required to write a function that merges this array of arrays into a one-dimensional array by combining the corresponding elements of each subarray using the ... Read More

We have two arrays of numbers like these −const arr1 = [12, 54, 2, 4, 6, 34, 3]; const arr2 = [54, 2, 5, 12, 4, 1, 3, 34];We are required to write a JavaScript function that takes in two such arrays and returns the element from arrays that are ... Read More

We are required to write a function that counts how many of the elements are in the array below / above a given number.Following is our array of Numbers −const array = [54, 54, 65, 73, 43, 78, 54, 54, 76, 3, 23, 78];For example, if the number is 60, ... Read More

We are required to write an array function midElement() that returns the middlemost element of the array without accessing its length property and without using any kind of built-in loops.If the array contains an odd number of elements, we return the one, middlemost element, or if the array contains an ... Read More

Let’s say, we are required to write a JavaScript function that takes in an array of numbers with duplicate entries and sums all the duplicate entries to one index.For example −If the input array is −const input = [1, 3, 1, 3, 5, 7, 5, 4];Then the output should be ... Read More

Let’s say, we are required to write a function that takes in an array arr of string / number literals as the first argument and a number n as second argument.We are required to return an array of n subarrays, each of which contains at most arr.length / n elements. ... Read More

We have two arrays of Numbers, and we are required to write a function, let’s say intersection() that computes their intersection and returns an array that contains the intersecting elements in any order. Each element in the result should appear as many times as it shows in both arrays.For example ... Read More

Let’s say, we have an array of numbers like this −const arr = [-1, -2, -1, 0, -1, -2, -1, -2, -1, 0, 1, 0];We are required to write a JavaScript function that counts the consecutive groups of non-negative (positives and 0) numbers in the array.Like here we have consecutive ... Read More