How to Implement Comb Sort in Python

Submitted by razormist on Tuesday, April 21, 2026 - 22:47.

In this tutorial, we will learn how to program "How to Implement Comb Sort in Python". The objective is to implement comb sort. This tutorial will guide you step by step through the process of implementing comb sort effectively. By the end of this tutorial, you will have a solid understanding of how to perform this task in Python, helping you strengthen your problem-solving abilities and improve your coding skills.

This topic is straightforward and easy to understand. By following the instructions provided, you will be able to complete it with ease. The program will guide you step by step through the process of implementing comb sort. So, let’s dive into the coding process!

Getting Started:

First you will have to download & install the Python IDLE's, here's the link for the Integrated Development And Learning Environment for Python https://www.python.org/downloads/.

Creating Main Function

This is the main function of the application. The following code will display a simple GUI in terminal console that will display program. To do this, simply copy and paste these blocks of code into the IDLE text editor.

def comb_sort(alist):
    def swap(i, j):
        alist[i], alist[j] = alist[j], alist[i]
 
    gap = len(alist)
    shrink = 1.3
    no_swap = False
 
    while not no_swap:
        gap = int(gap / shrink)
 
        if gap < 1:
            gap = 1
            no_swap = True
        else:
            no_swap = False
 
        i = 0
        while i + gap < len(alist):
            if alist[i] > alist[i + gap]:
                swap(i, i + gap)
                no_swap = False
            i += 1
 
 
# MAIN LOOP
while True:
    print("\n============= Implement Comb Sort =============\n")
 
    # Input handling
    try:
        user_input = input("Enter numbers to sort (space-separated): ").strip()
        if not user_input:
            print("Input cannot be empty.")
            continue
 
        alist = [int(x) for x in user_input.split()]
    except ValueError:
        print("Invalid input. Please enter integers only.")
        continue
 
    print(f"Original list: {alist}")
 
    # Perform sorting
    comb_sort(alist)
 
    print(f"Sorted list:   {alist}")
 
    # Try Again Option
    opt = input("\nDo you want to try again? (yes/no): ").strip().lower()
    if opt == 'no':
        print("Exiting program...")
        break
    elif opt != 'yes':
        print("Invalid choice. Exiting program...")
        break

This Python program implements Comb Sort, an improved variation of Bubble Sort that eliminates small values near the end of the list more efficiently by using a shrinking gap between compared elements. It repeatedly compares and swaps elements that are a certain gap apart, gradually reducing the gap until it becomes 1, at which point it behaves like Bubble Sort. The program runs interactively, allowing users to input a list of integers, view the original list, and see the sorted result. It also includes input validation and a loop that lets users repeat the process or exit.

Output:

There you have it we successfully created How to Implement Comb Sort in Python. I hope that this simple tutorial help you to what you are looking for. For more updates and tutorials just kindly visit this site. Enjoy Coding!

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