What is Bubble Sort Algorithm | How to Implement Bubble Sort Algorithm in JavaScript

What is bubble sort algorithm? How to implement bubble sort algorithm in javascript? Bubble sort is a simple sorting algorithm that repeatedly steps through the list to be sorted, compares each pair of adjacent items and swaps them if they are in the wrong order. It is repeated until no swaps are needed, which indicates that the list is sorted. So write a function to implement the bubble sort algorithm in JavaScript. It is a common javascript interview question.

To implement it in javascript, we can create a function that takes an array as a parameter and sorts it in ascending order using the bubble sort algorithm. We can create two loops. The outer loop will iterate through the entire array, and the inner loop will compare each element with the next one. If the current element is greater than the next one, they are swapped. The process is repeated until the array is fully sorted. To demonstrate JavaScript implementation of the bubble sort algorithm, let's create a function that takes an array as its input parameter, to sort it in ascending order.

Define a variable which is assigned the length of the input array. This is used later, to control the number of iterations in the for loops. The first for loop, with the variable i, starts at the first index of the array, 0, and iterates until it reaches the end of the array, that is len. The second for loop, with the variable j, starts at the first index of the array, 0, and iterates until it reaches the end of the array minus the current iteration of the outer loop, len - i - 1. This is because on each pass of the outer loop, the last element of the array will have been sorted and no longer needs to be considered.

Within the inner for loop, use if statement that compares the current element at index j with the next element at index j + 1. If the current element is greater than the next element, the elements are swapped. This is done by first creating a temporary variable temp which is assigned the value of the current element. Then the current element is assigned the value of the next element, and the next element is assigned the value of the temporary variable.

Once the outer for loop completes its iterations, the array is returned by the function. Calling the function with an array of elements to sort, and it will be sorted in ascending order.

One thing to note that, the bubble sort algorithm is inefficient for large lists. However, it has the advantage of being easy to understand and implement. That is why it is commonly asked interview question in javascript and other programming languages.

* Full Playlist (Coding Challenge, Interview Questions & Leetcode) *

It can be a good javascript interview question or frontend interview question. You may not be required to solve it on paper or whiteboard but the interviewer may ask you to give an idea on how to approach this algorithm. If you have an understanding of how to solve this problem or approach this algorithm, you will be able to answer it and get your next job as a frontend developer or full-stack developer.

Our tutorials help you to improve your career growth, perform better in your job and make money online as a freelancer. Learn the skills to build and design professional websites, and create dynamic and interactive web applications using JavaScript, or WordPress. Our tutorials are tailored to help beginners and professionals alike. Whether you're just starting in the field or you're looking to expand your knowledge, we've got something for you. Join us on this journey to becoming a skilled web developer. Subscribe to our channel and let's get started!

Thank You!
👍 LIKE VIDEO
👊 SUBSCRIBE
🔔 PRESS BELL ICON
✍️ COMMENT

#js #javascript #challenge #WebStylePress #WebDevelopment #javascriptinterviewquestions #javascripttutorial #leetcode #coding #programming #computerscience #bubblesort