Suppose we are given a number 124 and are required to write a function that takes this number as input and returns its expanded form as a string.The expanded form of 124 is −'100+20+4'ExampleFollowing is the code −const num = 125; const expandedForm = num => {    const numStr ... Read More

We are required to write a JavaScript function that takes in a string as the first argument, a number, say n, as the second argument and a character, say c, as the third argument. The function should replace the nth appearance of any character with the character provided as the ... Read More

We are required to write a JavaScript function that takes in an array of numbers and returns a subarray that contains all the element from the original array that are larger than all the elements on their right.ExampleFollowing is the code −const arr = [12, 45, 6, 4, 23, 23, ... Read More

A string can be considered as a valid hex code if it contains no characters other than the 0-9 and a-f alphabetsFor example −'3423ad' is a valid hex code '4234es' is an invalid hex codeWe are required to write a JavaScript function that takes in a string and checks whether ... Read More

We are required to write a JavaScript function that takes in an positive integer and returns its additive persistenceThe additive persistence of an integer, say n, is the number of times we have to replace the number with the sum of its digits until the number becomes a single digit ... Read More

We are required to write a JavaScript function that takes in an array of numbers and checks if the elements of the array can be rearranged to form a sequence of numbers or not.For example −If the array is −const arr = [3, 1, 4, 2, 5];Then the output should ... Read More

We are required to write a JavaScript function that checks whether a sentence is smooth or not. A sentence is smooth when the first letter of each word in the sentence is same as the last letter of its preceding word.ExampleFollowing is the code −const str = 'this stringt tries ... Read More

In Mathematics, a strictly increasing function is that function in which the value to be plotted always increase. Similarly, a strictly decreasing function is that function in which the value to be plotted always decrease.We are required to write a JavaScript function that takes in an array of numbers and ... Read More

We are required to write a JavaScript function that takes in three numbers say a, b and c representing the length of three sides of a triangle. The function should return true if those three sides represent a right-angle triangle, false otherwise.Right angle triangleA triangle is a right-angle triangle if ... Read More

We are required to write a JavaScript function that takes in a number as the first argument, say n, and an array of numbers as the second argument. The function should return the smallest n digit number which is a multiple of all the elements specified in the array. If ... Read More