Bubble Sort in C: Implementation Guide

Bubble sort is a simple sorting algorithm that works by repeatedly stepping through the list, comparing each pair of adjacent items and swapping them if they are in the wrong order. Each pass through the list places the largest element in its correct position, hence the name “bubble sort”.

The specific implementation principle is as follows:

1. Starting from the first element of the array, compare each pair of adjacent elements one by one, and if the element in the front is greater than the element in the back, swap their positions.
2. Continue comparing backwards until the last element, at this point the largest element has been swapped to the last position.
3. Repeat the steps above, but do not compare the last sorted element again.
4. Repeat the above steps until all elements are sorted.

The time complexity of bubble sort is O(n^2), where n is the length of the array. Although bubble sort is simple and easy to understand, its high time complexity often makes it not the preferred sorting algorithm in practical applications.