We are required to compare, and get the difference, between two arrays containing single character strings appearing multiple times in each array.Example of two such arrays are −const arr1 = ['A', 'C', 'A', 'D']; const arr2 = ['F', 'A', 'T', 'T'];We will check each character at the same position and ... Read More

Suppose, we have an array of arrays like this −const arr = [    [1, 0],    [0, 1],    [0, 0] ];We are required to write a JavaScript function that takes in one such array as the first argument and an array of exactly two Numbers as the second ... Read More

Suppose we have two arrays of strings. The first array contains exactly 12 strings, one for each month of the year like this −const year = ['jan', 'feb', 'mar', 'apr', 'may', 'jun', 'jul', 'aug', 'sep', 'oct', 'nov', 'dec'];The second array, contains exactly two strings, denoting a range of months like ... Read More

Suppose, we have an array of objects and an array of strings like this −Exampleconst orders = [    { status: "pending"},    { status: "received" },    { status: "sent" },    { status: "pending" } ]; const statuses = ["pending", "sent", "received"];We are required to write a JavaScript ... Read More

We are required to write a JavaScript function that takes in an array of intervals (start and end time like this −const arr = [    { start: '01:00', end: '04:00' },    { start: '05:00', end: '08:00' },    { start: '07:00', end: '11:00' },    { start: '09:30', ... Read More

We are required to write a JavaScript function that takes in a string of any length. The function should then count the number of words in that string.Exampleconst str = 'THis is an example string'; const findWords = (str = '') => {    if(!str.length){       return 0; ... Read More

The perimeter of a triangle is the sum of all three sides of the triangle. We are required to write a JavaScript function that takes in an array of numbers of at least three or more elements.Our function should pick three longest sides (largest numbers) from the array that when ... Read More

We are given two strings, say s and t. String t is generated by random shuffling string s and then add one more letter at a random position.We are required to write a JavaScript function that takes both these strings and returns the letter that was added to t.For example ... Read More

We know that natural numbers in Mathematics are the numbers starting from 1 and spanning infinitely.First 15 natural numbers are −1 2 3 4 5 6 7 8 9 10 11 12 13 14 15Therefore, the first natural digit is 1, second is 2, third is 3 and so on. ... Read More

Given a string containing just the characters '(' and ')', we find the length of the longest valid (well-formed) parentheses substring.A set of parentheses qualifies to be a well-formed parentheses, if and only if, for each opening parentheses, it contains a closing parentheses.For example −'(())()' is a well-formed parentheses '())' ... Read More