ProblemWe are required to write a JavaScript function that takes in a string, str, which consists of only ‘[‘ or ‘]’. Our function is supposed to add the minimum number of square brackets ( '[' or ']', and in any positions ) so that the resulting bracket combination string is valid. And lastly, we should return the smallest number of brackets added.For example, if the input to the function isInputconst str = '[]]';Outputconst output = 1;Output ExplanationBecause, if we add ‘[‘ to the starting, the string will be balanced.Exampleconst findAdditions = (str = '') => {    let left = 0 ... Read More

ProblemWe are required to write a JavaScript function that takes in a binary array, arr, as the first argument, and a number, target, as the second argument.Our function is supposed to count the number of subarrays that exists in the array arr, the sum of whose elements is equal to count. We should finally return this count.For example, if the input to the function isInputconst arr = [1, 0, 1, 0, 1]; const target = 2;Outputconst output = 4;Output ExplanationBecause the desired subarrays are:[1, 0, 1][1, 0, 1, 0] [0, 1, 0, 1] [1, 0, 1]Example Live Democonst arr = [1, ... Read More

Monotonically Increasing String:A string of '0's and '1's is monotonically increasing if it consists of some number of '0's (possibly 0), followed by some number of '1's (also possibly 0.)ProblemWe are required to write a JavaScript function that takes in a binary string, str, as the first and the only argument.We can flip any ‘0’ to ‘1’ or any ‘1’ to ‘0’ present in the string. Our function should return the minimum number of flips to make S monotonically increasing.For example, if the input to the function isInputconst str = '00110';Outputconst output = 1;Output ExplanationBecause if we flip the last ... Read More

ProblemWe are required to write a JavaScript function that takes in a string of English alphabets, str, as the first and the only argument. Our function should return true if and only if the vowels and consonants appear alternatingly in the input string, false otherwise.For example, if the input to the function is −Inputconst str = 'amazon';Outputconst output = true;Output ExplanationBecause the vowels and consonants appear alternatingly in the string ‘amazon’.ExampleFollowing is the code − Live Democonst str = 'amazon'; const appearAlternatingly = (str = '') => {    return str.split('').every((v, i)=>{     if (/[aeiou]/.test(str[0])){       ... Read More

ProblemWe are required to write a JavaScript function that takes in two arrays of numbers, arr1 and arr2, as the first and second argument respectively.Our function should return true if and only if every element in arr2 is the square of any element of arr1 irrespective of their order of appearance.For example, if the input to the function is −Inputconst arr1 = [4, 1, 8, 5, 9]; const arr2 = [81, 1, 25, 16, 64];Outputconst output = true;ExampleFollowing is the code − Live Democonst arr1 = [4, 1, 8, 5, 9]; const arr2 = [81, 1, 25, 16, 64]; const isSquared ... Read More

In this article, we create a function that can take a string in any format. Such as normal case, snake case, pascal case or any other into camelCase in JavaScript. camelCase is a writing style where each word within a phrase is capitalized, except for the first word, and there are no spaces or punctuation. Let us understand through some sample example of I/O Scenario − Sample Input - const str = 'New STRING'; Sample Output - const output = 'newString'; Converting any case to camelCase in JavaScript Converting any case to camelCase in JavaScript is quite easy. Let's ... Read More

ProblemWe are required to write a JavaScript function that takes in any number of arrays of literals as input.Our function should prepare a new array that contains elements picked alternatingly from all the input arrays.For example, if the input to the function is −Inputconst arr1 = [1, 2, 3, 4]; const arr2 = [11, 12, 13, 14]; const arr3 = ['a', 'b', 'c'];Outputconst output = [1, 11, 'a', 2, 12, 'b', 3, 13, 'c', 4, 14];ExampleFollowing is the code − Live Democonst arr1 = [1, 2, 3, 4]; const arr2 = [11, 12, 13, 14]; const arr3 = ['a', 'b', 'c']; ... Read More

ProblemWe are required to write a JavaScript function that takes in a string, str, that contains alphabets and whitespacesOur function should iterate over the input string and perform actions so that the characters are concatenated into a new string in "case-insensitively-alphabetical-order-of-appearance" order. Whitespace and punctuation shall simply be removed!For example, if the input to the function is −Inputconst str = 'some simple letter combination!';Outputconst output = 'abceeeeiiillmmmnnoooprssttt';ExampleFollowing is the code − Live Democonst str = 'some simple letter combination!'; const orderString = (str = '') => {    let res = '';       for(let i = 97; i < ... Read More

ProblemConsider a situation where armies of two bunch of alphabets are fighting each other. The soldiers of both and their weight are as follows −TeamASoldierWeightA1B2C3D4TeamBSoldierWeightW1X2Y3Z4Other than the soldiers, there are bombs as well in the arena denoted by ‘!’, and a bomb kills soldiers placed at its adjacent sides.For instance: ‘A!BC’ will result in ‘C’ and ‘!!CC!!’ will result in ‘’.Our function should need to find out when all the bombs in the arena explode which team wins or if both the teams end up with the same weight.For example, if the input to the function is −Inputconst str = ... Read More

ProblemWe are required to write a JavaScript function that takes in a number, num, as the first argument and another number, parts, as the second argument.Our function should split the number num into exactly (parts) numbers and we should keep these two conditions in mind −The numbers should be as close as possibleThe numbers should even (if possible).And the ordering of numbers is not important.For example, if the input to the function is −Inputconst num = 20; const parts = 6;Outputconst output = [3, 3, 3, 3, 4, 4];ExampleFollowing is the code − Live Democonst num = 20; const parts = ... Read More