We have an array of arrays and are required to write a function that takes in this array and returns a new array that represents the sum of corresponding elements of original array.If the original array is −[    [43, 2, 21], [1, 2, 4, 54], [5, 84, 2], [11, ... Read More

Let’s say e have a parentArray that contains many sub arrays each of the same size, each sub array is an array of objects containing two properties: key and value. Within a subarray it is confirmed that two objects cannot have the same key but all subarrays have the same ... Read More

Let’s say, we have an object with other objects being its property value, it is nested to 2-3 levels or even more.Here is the sample object −const people = {    Ram: {       fullName: 'Ram Kumar',       details: {          age: 31, ... Read More

We have an array of objects that contains data about some cars. The array is given as follows −const cars = [{    company: 'Honda',    type: 'SUV' }, {    company: 'Hyundai',    type: 'Sedan' }, {    company: 'Suzuki',    type: 'Sedan' }, {    company: 'Audi',   ... Read More

We need to write a function that reads a string and converts the odd indexed characters in the string to upperCase and the even ones to lowerCase and returns a new string.Full code for doing the same will be −Exampleconst text = 'Hello world, it is so nice to be ... Read More

Let’s say, we will be given an array of numbers / strings that contains some duplicate entries, all we have to do is to return the frequency of each element in the array. Returning an object with element as key and it’s value as frequency would be perfect for this ... Read More

We are required to write a function, say breakString() that takes in two arguments: First, the string to be broken and second, a number that represents the threshold count of characters after reaching which we have to repeatedly add line breaks in place of spaces.For example −The following code should ... Read More

We have an array that contains some numbers and some strings. We are required to sort the array such that the numbers gets sorted and get placed before every string and then the string should be placed sorted alphabetically.For example −This array after being sortedconst arr = [1, 'fdf', 'afv', ... Read More

We are required to write a function validate() that takes in a string as one and only argument and returns another string that has all ‘a’ and ‘i’ replaced with ‘@’ and ‘!’ respectively.It’s one of those classic for loop problems where we iterate over the string with its index ... Read More

A number is a gapful number when −It has at least three digits, andIt is exactly divisible by the number formed by putting its first and last digits togetherFor example −The number 1053 is a gapful number because it has 4 digits and it is exactly divisible by 13. Similarly, ... Read More