Article Categories
- All Categories
-
Data Structure
-
Networking
-
RDBMS
-
Operating System
-
Java
-
MS Excel
-
iOS
-
HTML
-
CSS
-
Android
-
Python
-
C Programming
-
C++
-
C#
-
MongoDB
-
MySQL
-
Javascript
-
PHP
Articles by Nikitasha Shrivastava
Page 7 of 17
Check if items in an array are consecutive but WITHOUT SORTING in JavaScript
In the above statement we are asked to check if items in an array are consecutive without sorting the array with the help of javascript functionalities. We can solve this problem with some basic functionalities of javascript. Let us see how to do this! What are Consecutive Items in an Array ? Consecutive elements means every next item should be greater or smaller to the previous element in the sequence. For example we have an array [1, 2, 3, 4, 5], So here we can see that the array contains all the consecutive items as they are in increasing ...
Read MoreCalculating the average for each subarray separately and then return the sum of all the averages in JavaScript
In the given problem statement we are asked to calculate the average for each subarray separately and then return the sum of all the averages with the help of javascript functionalities. As we talk about average for subarrays we can use the reduce method of javascript. What is the reduce() Method in JavaScript ? Let's understand the working of a reduce function in JavaScript. In javascript the reduce method is used to reduce an array to a single value by iterating over each and every item of the array. And by applying the callback function that accumulates a value based ...
Read MoreCalculate the difference between the first and second element of each subarray separately and return the sum of their differences in JavaScript
In the given problem statement we are asked to calculate the difference between the first and second element of each subarray separately and we have to return the sum of their differences with the help of javascript functionalities. In the array data structures we can define an array which can also contain subarrays. What is an Array of Subarrays in JavaScript ? Let's understand the working of a list in JavaScript. In javascript we can define array of subarray or nested array. An array of subarrays is an array which contains one or more arrays as its elements. Every array ...
Read MoreValidating a power JavaScript
In this problem we have to validate that a given number is a power of n. If the given number is power of n then it should return the true value of it otherwise it should return false. To check this kind of validation we generally use arithmetic operators like Modulus - %, Division - /, comparison operators like less than < or greater than >. Lets understand this problem with an example. True value: N = 27 So 33 = 27 False Value: N = 28 So 33 != ...
Read MoreSplit array entries to form object in JavaScript
The problem statement is saying that we have to find a solution for a given array and split it to form an object with a key-value pair in javascript. Understand the problem In simple terms we have to convert a given array into an object. There are several methods present in javascript to convert an array into an object. We will use and code each of them one by one. Using reduce() and split() methods In this method we will use reduce and split functions of javascript. Algorithm The algorithm here discusses ...
Read MoreSort Array of objects by two properties in JavaScript
Given problem says to sort the given array of objects by two properties and create a program in javascript. Understanding the problem Let's have a deep understanding of the problem statement. You will be given an array of objects with key and value. As per the problem statement we need a sorted form of that array. To implement this problem we will first sort the first column of array and then second column of array. And then again arrange it in sorted form. As we understand arrays are basic data structures in computer science. Array can also ...
Read MoreMerging sorted arrays together JavaScript
Merging the sorted arrays together in javascript can be done using the sorting techniques available in data structures. In this problem we will be given two sorted arrays and we have to merge them. After merging them, return a single array which is also in a sorted form. For solving this problem we will use greedy approach. What are Sorted Arrays ? In javascript arrays are the collection of similar data types and we can resize the array in run time. Sorted arrays are sequential forms of items of an array. Their order should be ...
Read MoreMerge and group object properties in JavaScript
In the given problem, we have to merge and group object properties with the help of javascript. In this article you will learn how to merge and group the same type of properties in javascript. Understanding the Problem We are required to create a javascript method that will take in one array of objects. The created function should group all the properties of all the objects that have a value for name property. For example: Input [ {name: 'Adi', age: 22, color:'Black'}, {name: 'Adi', weight: 40, height:6} , {name: 'Mack', ...
Read MoreHow to sort an array of objects based on the length of a nested array in JavaScript
This problem statement is saying to sort an array of objects based on the length of the nested arrays in it. For example if the first nested array has 3 elements and the second array has 2 elements then put the second array in first place and the first array at the second index. Understanding the problem Sorting an array of objects based on the size of a nested array is the task we have given. For example, let's say we have an array of objects in which each object has a name property and a hobbies property, ...
Read MoreHow to get single array from multiple arrays in JavaScript
In this problem we will understand how to get a single array from multiple arrays and different ways to solve this problem. We will use three methods to solve this problem: the first method is with the help of the spread operator, second concat method and finally last method using push with the spread operator. Understanding the problem We have given two or more arrays and we have to concatenate them in a single array. There can be many arrays given and after concatenating them it should appear as a single array. Let’s understand with ...
Read More