Bubble Sort - Python Last Updated : 21 Feb, 2025 Summarize Suggest changes Share Like Article Like Report Bubble Sort is the simplest sorting algorithm that works by repeatedly swapping the adjacent elements if they are in the wrong order. Bubble Sort algorithm, sorts an array by repeatedly comparing adjacent elements and swapping them if they are in the wrong order. The algorithm iterates through the array multiple times, with each pass pushing the largest unsorted element to its correct position at the end. Code includes an optimization: if no swaps are made during a pass, the array is already sorted, and the sorting process stops. Below is the Python Implementation of Bubble Sort: Python def bubble_sort(arr): # Outer loop to iterate through the list n times for n in range(len(arr) - 1, 0, -1): # Initialize swapped to track if any swaps occur swapped = False # Inner loop to compare adjacent elements for i in range(n): if arr[i] > arr[i + 1]: # Swap elements if they are in the wrong order arr[i], arr[i + 1] = arr[i + 1], arr[i] # Mark that a swap has occurred swapped = True # If no swaps occurred, the list is already sorted if not swapped: break # Sample list to be sorted arr = [6,6,2] print("Unsorted list is:") print(arr) bubble_sort(arr) print("Sorted list is:") print(arr) OutputUnsorted list is: [39, 12, 18, 85, 72, 10, 2, 18] Sorted list is: [2, 10, 12, 18, 18, 39, 72, 85] Time Complexity: O(n2). However in practice, this optimized version might take less time as when array gets sorted, function would return.Auxiliary Space: O(1).Please refer complete article on Bubble Sort for more details! Advertise with us Next Article Selection Sort - Python K kartik Follow Similar Reads Python Programs Practice with Python program examples is always a good choice to scale up your logical understanding and programming skills and this article will provide you with the best sets of Python code examples.The below Python section contains a wide collection of Python programming examples. These Python co 11 min read Basic ProgramsHow to Add Two Numbers in PythonThe task of adding two numbers in Python involves taking two input values and computing their sum using various techniques . For example, if a = 5 and b = 7 then after addition, the result will be 12.Using the "+" Operator+ operator is the simplest and most direct way to add two numbers . It perform 4 min read Find Maximum of two numbers in PythonFinding the maximum of two numbers in Python helps determine the larger of the two values. 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