Bubble Sort Algorithm: A Simple and Efficient Sorting Technique in Python

Sorting algorithms are an essential tool in computer science, used to organize data and optimize search times. There are many different types of sorting algorithms, each with its own strengths and weaknesses. One of the simplest and most widely used sorting algorithms is Bubble Sort. In this article, we will explore the Bubble Sort algorithm in detail, including how it works and how to implement it in Python.

What is Bubble Sort?

Bubble Sort is a sorting algorithm that works by repeatedly swapping adjacent elements in an array if they are in the wrong order. The algorithm gets its name from the way that smaller elements "bubble" to the top of the array, similar to how bubbles rise to the surface of a liquid. The algorithm continues to iterate through the array until all elements are sorted.

How Does Bubble Sort Work?

Bubble Sort is a simple and easy-to-understand algorithm. Here is a step-by-step explanation of how it works:

Step 1: Starting from the first element in the array, compare each element with the next one.

Step 2: If the current element is greater than the next element, swap them.

Step 3: Move on to the next pair of elements and repeat step 2 until the end of the array.

Repeat Steps 1-3 until the entire array is sorted.

Let's take an example array to see how Bubble Sort works:

[5, 3, 8, 6, 7, 2]

First iteration:

[3, 5, 8, 6, 7, 2]

Second iteration:

[3, 5, 6, 8, 7, 2]

Third iteration:

[3, 5, 6, 7, 8, 2]

Fourth iteration:

[3, 5, 6, 7, 2, 8]

Fifth iteration:

[3, 5, 6, 2, 7, 8]

Sixth iteration:

[3, 5, 2, 6, 7, 8]

Seventh iteration:

[3, 2, 5, 6, 7, 8]

Eighth iteration:

[2, 3, 5, 6, 7, 8]

The array is now sorted.

Implementing Bubble Sort in Python

Now that we understand how Bubble Sort works, let's see how to implement it in Python. Here is the code for Bubble Sort in Python:

def bubble_sort(array):

    n = len(array)

    for i in range(n):

        for j in range(0, n-i-1):

            if array[j] > array[j+1]:

                array[j], array[j+1] = array[j+1], array[j]

# Example usage

array = [5, 3, 8, 6, 7, 2]


print("Sorted array:", array)

In this example, we define the bubble_sort function that takes an array as input and sorts it using the Bubble Sort algorithm. We then create an example array and pass it to the bubble_sort function. Finally, we print the sorted array using the print function.


Bubble Sort is a simple and efficient sorting algorithm that is widely used in computer science. It is easy to understand and implement, making it a great choice for small to medium-sized arrays. However, for larger arrays, Bubble Sort can be slow and less efficient than other sorting algorithms such as Quick Sort or Merge Sort.

We hope this article has helped you understand the Bubble Sort algorithm and how to implement it in Python. Remember that sorting algorithms are an important tool in computer science, and understanding how they work can help you optimize your code and improve performance.

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