ProblemWe are required to write a JavaScript function that takes in an array of numbers in string format. Our function must return a string. The numbers correspond to the letters of the alphabet in reverse order: a=26, z=1 etc.We should also account for '!', '?' and ' ' that are represented by '27', '28' and '29' respectively.ExampleFollowing is the code − Live Democonst arr = ['5', '23', '2', '1', '13', '18', '6']; const convertToString = (arr) => {    let res = '';    for (let char of arr) {       if (Number(char)

ProblemWe are required to write a JavaScript function that takes in a string. Our function should turn each character into its ASCII character code and join them together to create a number. Then we should replace all instances of 7 from this number to 1 to construct another number. Finally, we should return the difference of both these numbersExampleFollowing is the code − Live Democonst str = 'AVEHDKDDS'; const ASCIIDifference = (str = '') => {    return str    .split('')    .map(c => c.charCodeAt(0))    .join('')    .split('')    .map(Number)    .filter(str => str === 7)    .length * 6; }; console.log(ASCIIDifference(str));Output12

ProblemWe are required to write a JavaScript function that takes in an array of numbers. Our function should take each number in the array and square it if it is even, or square root the number if it is odd and then return the sum of all the new numbers rounded to two decimal places.ExampleFollowing is the code − Live Democonst arr = [45, 2, 13, 5, 14, 1, 20]; const squareAndRootSum = (arr = []) => {    const res = arr.map(el => {       if(el % 2 === 0){          return el * el;       }else{          return Math.sqrt(el);       };    });    const sum = res.reduce((acc, val) => acc + val);    return sum; }; console.log(squareAndRootSum(arr));Output613.5498231854631

ProblemWe are required to write a JavaScript function that takes in two arrays, specifying the lengths, widths, and heights of two cuboids.Our function should calculate the volume of both cuboids and return their absolute difference.ExampleFollowing is the code − Live Democonst h1 = 10; const w1 = 12; const l1 = 15; const h2 = 12; const w2 = 15; const l2 = 9; const findVolumeDifference = (l1, w1, h1, l2, w2, h2) => {    const v1 = l1 * w1 * h1;    const v2 = l2 * w2 * h2;    const diff = Math.abs(v1 - v2);    return diff; }; console.log(findVolumeDifference(l1, w1, h1, l2, w2, h2));Output180

ProblemWe are required to write a JavaScript function that takes in the length, width and height of a cuboid and return the length of its diagonal.ExampleFollowing is the code − Live Democonst height = 10; const width = 12; const length = 15; const findDiagonal = (l, w, h) => {    const ll = l * 2;    const ww = w * 2;    const hh = h * 2;    const sum = ll + ww + hh;    const diagonal = Math.sqrt(sum);    return diagonal; }; console.log(findDiagonal(length, width, height));Output8.602325267042627

ProblemWe are required to write a JavaScript function that takes in a range specified by an array of two numbers m and n.Our function is supposed to find all integers between m and n (m and n integers such as 1

ProblemWe are required to write a JavaScript function that takes in an array of numbers containing numbers from 1 to n.The problem is that one number from the array goes missing and the array is not sorted as well. Our function should find and return that one number missing from the array.ExampleFollowing is the code − Live Democonst arr = [4, 7, 1, 8, 9, 5, 2, 3]; const findMissing = (arr = []) => {    const sumArr = arr.reduce((acc, val) => acc + val);    const { length: len } = arr;    const sumFirst = (len + 1) * (len + 2) * .5;    const missing = sumFirst - sumArr;    return missing; }; console.log(findMissing(arr));Output6

ProblemWe are required to write a JavaScript function that takes in a number n. Our function should find all such number x and y such that −x^2 - 4y^2 = n.And it should return an array of all such pairs.ExampleFollowing is the code − Live Democonst num = 90005; const findSolution = (num = 1) => {    const res = [];    let a, b;    for(let a = 1; a

ProblemWe are required to write a JavaScript function that takes in a number n. Our function should find and return that smallest possible number which is divisible by all numbers from 1 to n.ExampleFollowing is the code − Live Democonst num = 11; const smallestDivisible = (num = 1) => {    let res = num * (num - 1) || 1;    for (let i = num - 1; i >= 1; i--) {       if (res % i) {          for (let j = num - 1; j >= 1; j--) {             if (!(i % j) && !(res % j)) {                res = i * res / j;                break;             }          }       }    }    return res; } console.log(smallestDivisible(num));Output27720

ProblemWe are required to write a JavaScript function that takes in two sorted arrays of numbers our function should merge all the elements of both the arrays into a new array and return that new array sorted in the same order.ExampleFollowing is the code − Live Democonst arr1 = [1, 3, 4, 5, 6, 8]; const arr2 = [4, 6, 8, 9, 11]; const mergeSortedArrays = (arr1 = [], arr2 = []) => {    const res = [];    let i = 0;    let j = 0;    while(i < arr1.length && j < arr2.length){       if(arr1[i] ... Read More