Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
ProblemWe are required to write a JavaScript function that takes in human age in years and returns respective dogYears and catYears.Inputconst humanYears = 15;Outputconst output = [ 15, 76, 89 ];ExampleFollowing is the code − Live Democonst humanYears = 15; const humanYearsCatYearsDogYears = (humanYears) => { let catYears = 0; let dogYears = 0; for (let i = 1; i
ProblemWe are required to write a JavaScript function that takes in a nested array of element and return the deep count of elements present in the array.Inputconst arr = [1, 2, [3, 4, [5]]];Outputconst output = 7;Because the elements at level 1 are 2, elements at level 2 are 2 and elements at level 3 are 1, Hence the deep count is 7.ExampleFollowing is the code − Live Democonst arr = [1, 2, [3, 4, [5]]]; const deepCount = (arr = []) => { return arr .reduce((acc, val) => { return acc + (Array.isArray(val) ? deepCount(val) ... Read More
ProblemWe are required to write a JavaScript function that takes in a string and replaces all appearances of dots(.) in it with dashes(-).inputconst str = 'this.is.an.example.string';Outputconst output = 'this-is-an-example-string';All appearances of dots(.) in string str are replaced with dash(-)ExampleFollowing is the code − Live Democonst str = 'this.is.an.example.string'; const replaceDots = (str = '') => { let res = ""; const { length: len } = str; for (let i = 0; i < len; i++) { const el = str[i]; if(el === '.'){ res += '-'; ... Read More
Almost Isosceles TriangleAn Almost Isosceles Integer Triangle is a triangle that all its side lengths are integers and also, two sides are almost equal, being their absolute difference 1 unit of length.ProblemWe are required to write a JavaScript function that takes in a number which specifies the perimeter of a triangle.Our function should find the measurement of such an almost isosceles triangle whose perimeter is nearest to the input perimeter.For example, if the desired perimeter is 500, Then the almost isosceles triangle with the nearest perimeter will be − [105, 104, 181]ExampleFollowing is the code − Live Democonst perimeter = 500; ... Read More
ProblemWe are required to write a JavaScript function that takes in an array of numbers.Our function should find the maximum product obtained from multiplying 2 adjacent numbers in the array.ExampleFollowing is the code − Live Democonst arr = [9, 5, 10, 2, 24, -1, -48]; function adjacentElementsProduct(array) { let maxProduct = array[0] * array[1]; for (let i = 1; i < array.length; i++) { product = array[i] * array[i + 1]; if (product > maxProduct) maxProduct = product; } return maxProduct; }; console.log(adjacentElementsProduct(arr));Output50
ProblemWe are required to write a JavaScript function that takes in an array of numbers and a single number.Our function should find that very number which should be pushed to the array so that its average equals the number specified by the second argument.ExampleFollowing is the code − Live Democonst arr = [4, 20, 25, 17, 9, 11, 15]; const target = 25; function findNumber(arr, target) { let sum = arr.reduce((a, b) => a + b, 0); let avg = sum / arr.length; let next = Math.ceil((target * (arr.length + 1)) - sum); if (next
ProblemConsider an increasing sequence which is defined as follows −The number seq(0) = 1 is the first one in seq.For each x in seq, then y = 2 * x + 1 and z = 3 * x + 1 must be in seq too.There are no other numbers in seq.Therefore, the first few terms of this sequence will be −[1, 3, 4, 7, 9, 10, 13, 15, 19, 21, 22, 27, ...]We are required to write a function that takes in a number n and returns the nth term of this sequence.ExampleFollowing is the code − Live Democonst num = ... Read More
ProblemWe are required to write a JavaScript function that takes in a number and returns its reversed number.One thing that we should keep in mind is that numbers should preserve their sign; i.e., a negative number should still be negative when reversed.ExampleFollowing is the code − Live Democonst num = -224; function reverseNumber(n) { let x = Math.abs(n) let y = 0 while (x > 0) { y = y * 10 + (x % 10) x = Math.floor(x / 10) }; return Math.sign(n) * y }; console.log(reverseNumber(num));Output-422
ProblemWe are required to write a JavaScript function that takes in an array of Boolean values and a logical operator.Our function should return a Boolean result based on sequentially applying the operator to the values in the array.ExampleFollowing is the code − Live Democonst array = [true, true, false]; const op = 'AND'; function logicalCalc(array, op){ var result = array[0]; for(var i = 1; i < array.length; i++){ if(op == "AND"){ result = result && array[i]; } if(op == "OR"){ result = result || array[i]; } if(op == "XOR"){ result = result != array[i]; } } return result; } console.log(logicalCalc(array, op));Outputfalse
ProblemWe are required to write a JavaScript function that takes in an array of names (string). This array specifies the names of people that liked a particular post on some social networking site.If the count of likes are less than or equal to three our function should simply return all names saying these people liked the post but if the count is greater than three then our function should return first two names and remaining count.ExampleFollowing is the code − Live Democonst names = ['Ram', 'Manohar', 'Jay', 'Kumar', 'Vishal']; const displayLikes = (names) => { return [ ... Read More