AmitDiwan has Published 10744 Articles

Find the closest value of an array in JavaScript

AmitDiwan

AmitDiwan

Updated on 12-Oct-2020 11:50:24

240 Views

We are required to write a JavaScript function that takes in an array of numbers as the first argument and a number as the second argument. The function should then return the number from the array which closest to the number given to the function as second argument.ExampleThe code for ... Read More

JavaScript Array showing the index of the lowest number

AmitDiwan

AmitDiwan

Updated on 12-Oct-2020 11:48:57

166 Views

We are required to write a JavaScript function that takes in an array of numbers. Then the function should return the index of the smallest number in the array.ExampleThe code for this will be −const arr = [3, 56, 56, 23, 7, 76, -2, 345, 45, 76, 3]; const lowestIndex ... Read More

Grouping array values in JavaScript

AmitDiwan

AmitDiwan

Updated on 12-Oct-2020 11:47:14

467 Views

Suppose we have an array of objects containing some years and weeks data like this −const arr = [    {year: 2017, week: 45},    {year: 2017, week: 46},    {year: 2017, week: 47},    {year: 2017, week: 48},    {year: 2017, week: 50},    {year: 2017, week: 52},   ... Read More

How to sort array according to age in JavaScript?

AmitDiwan

AmitDiwan

Updated on 12-Oct-2020 11:44:11

415 Views

We are required to write a JavaScript function that takes in an array of numbers representing ages of some people.Then the function should bring all the ages less than 18 to the front of the array without using any extra memory.ExampleThe code for this will be −const ages = [23, ... Read More

Grouping and sorting 2-D array in JavaScript

AmitDiwan

AmitDiwan

Updated on 12-Oct-2020 11:41:37

857 Views

Suppose we have a two-dimensional array of numbers like this −const arr = [    [1, 3, 2],    [5, 2, 1, 4],    [2, 1] ];We are required to write a JavaScript function that groups all the identical numbers into their own separate subarray, and then the function should ... Read More

String replace multiple characters with an asterisk in JavaScript

AmitDiwan

AmitDiwan

Updated on 12-Oct-2020 11:39:30

1K+ Views

We are required to write a JavaScript function that takes in a string as the first argument and an array of numbers. Our function should replace all the characters in the string at indices that are specified by the array elements taken as the second argument with an asterisk.ExampleThe code ... Read More

Iterate over an object and remove false property in JavaScript

AmitDiwan

AmitDiwan

Updated on 12-Oct-2020 11:37:36

1K+ Views

Suppose, we have a JSON object like this −const obj = {    a: {       someKey: {          propOne: '',          enabled: true       }    },    b: {       someKey: {         ... Read More

Center of each side of a polygon in JavaScript

AmitDiwan

AmitDiwan

Updated on 12-Oct-2020 11:34:32

191 Views

Suppose, we array of arrays like this −const arr = [    [-73.9280684530257, 40.8099975343718],    [-73.9282820374729, 40.8100875554645],    [-73.9280124002104, 40.8103130893677],    [-73.927875543761, 40.8102554080229],    [-73.9280684530257, 40.8099975343718] ];Here each subarray represents a point on a 2-D plane, and each point is a vertex of n sided polygon where n is the ... Read More

Combine two different arrays in JavaScript

AmitDiwan

AmitDiwan

Updated on 12-Oct-2020 11:32:20

397 Views

Suppose we have two arrays, the first array contains the scheduled date for some events and the second array contains the names of those events, like this −const dates = [    {       id:"1",       date:"2017-11-07"    },    {       id:"1",   ... Read More

Finding number of occurrences of the element appearing most number of times in JavaScript

AmitDiwan

AmitDiwan

Updated on 12-Oct-2020 11:26:58

436 Views

We are required to write a JavaScript function that takes in an array of literals and returns the count of elements that appears for the most number of times in the array.ExampleThe code for this will be −let arr = [2, 8, 4, 8, 6, 4, 7, 8]; const countOccurence ... Read More

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