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 More

As the problem stated, create a program for a unique sort in javascript. Basically we have to remove duplicate elements from an array. Understand the problem In this problem statement we need to eliminate the same or duplicated item from an array. For solving this kind of problem we can use some predefined methods of javascript. In this article you will be able to learn usage of forEach(), spread operator, set() method, filter() method and indexOf() methods. Lets understand this problem with an example. Array before sorting and with duplicates [535, 646, ... Read More

The problem statement says to merge duplicate elements and increase the count for every object present in the array and implement this program in javascript. Understanding the Problem To start coding we need to understand the basic functionality of the javascript functions. Predefined functions in JavaScript will complete half of our task. Merging and eliminating duplicates are the fundamental array optimization operations that can be performed. In this issue, we will define a count variable that will count how many entries there are in the array. We will go through each item in the array using the ... Read More

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 More

The Given problem is stating to count the duplicates of array elements and then aggregating objects in a new array. Understanding the Problem Problem statement is saying to identify the duplicate elements from an array and make a single array of those objects stating the counts. To solve this question we will use brute force technique with the help of for loops. What is an Aggregating Array of Objects? Aggregation in an array refers to combining down several objects in a new array as an output. We have to check if the aggregate of objects ... Read More

In this problem, we have to group all the duplicate data in the array by making their subarray. After making the subarray we have to arrange them in a sorted order. This problem can be solved by searching techniques of data structures. Understanding the Problem So for solving this problem, we will use javascript’s reduce() method in two ways. The reduce method is an iterative method which uses a reducer function to iterate through all the items in the array. So by checking one by one we will keep track of all the elements and ... Read More

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 More

The problem stated that we have to add two properties of the JSON object and count its occurrences. For example we have name and age properties in JSON then group them in a single property and count their occurrences. What is JSON? JSON (Javascript Object Notation) is lightweight data to transfer between devices. It is human readable and writable data. JSON is in the form of key-value pairs. Keys are strings to define values. In JSON each entry is separated by a semicolon. For example - {“name” : “Peter”}, in this example name is a key and Peter ... Read More

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

In the given problem, we have to find out the average of every group of n elements in the array. If there are m elements in the array, then calculate the average of every group and show the result in array form. Understanding the Problem Suppose we have 6 elements in the array and make a group of 2 elements. Now calculate the average of every group individually. Now that we have their average values, we can combine them into a single array. To implement this problem we have used reduce(), push(), and slice(). These ... Read More