Glad to know Princy that you like this bubble sort program and my explanation. Javin, Does this looks okay, is there a problem using while loop with BubbleSort? I believe this would avoid unnecessary loops. Yup, looks good to me but did you tested it for positive, negative and boundary conditions? Write bubble sort algorithm to sort a list of numbers. Feel free to comment, ask questions if you have any doubt.
Pages Home core java spring online courses thread java 8 coding sql books oop interview certification free resources best. Bubble sort is one of the classic sorting algorithms,s which is used to explain sorting during various computer and engineering courses. You may expect questions like the Write Java program to sort integer arrays using bubble sort during any programming interview. Since algorithmic questions are always tricky questions and not easy to code.
Even the simplest of them can lead to confusion, especially if you are not gifted with a natural programming head. I have seen many developers fumble if asked to code on the spot. That's why it's advisable to do algorithmic and logical programming during training and learning programming and OOPS to get this skill of converting logic into code.
Let's come back to Bubble sort , In the Bubble sort algorithm we sort an unsorted array by starting from the first element and comparing it with the adjacent element. If the former is greater than later then we swap and by doing this we get the largest number at the end after the first iteration.
So in order to sort n elements you require n-1 iteration and almost n-1 comparison. To recap here is the logic for the bubble sort sorting algorithm :. Here is a complete code example of a bubble sort in Java. It uses the same algorithm as explained in the first pass, it uses two loops. The inner loop is used to compare adjacent elements and the outer loop is used to perform Iteration.
If you are using Array List instead of the array then you can sort them using Collections. Way 2: Using sort method of Arrays class Arrays. Sort works for arrays which can be of primitive data type also which in turn by default sorts in ascending order. Arrays; import java. Skip to content. Change Language. Related Articles. Table of Contents.
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