Dsa Sort Bubble

In this tutorial, you'll learn about How to Fix Bubble Sort Errors. We cover key concepts, practical examples, and best practices.

Fix bubble sort errors when unnecessary iterations after array is already sorted.

Quick Fix

Wrong

def bubble(a):
    n=len(a)
    for i in range(n):
        for j in range(n-1):
            if a[j]>a[j+1]: a[j],a[j+1]=a[j+1],a[j]

O(n^2) even when array already sorted. No early termination.

Right

def bubble(a):
    n=len(a)
    for i in range(n):
        swp=False
        for j in range(n-1-i):
            if a[j]>a[j+1]: a[j],a[j+1]=a[j+1],a[j]; swp=True
        if not swp: break
    return a

[5,1,4,2,8] -> [1,2,4,5,8]. O(n) best case, O(n^2) average.

Prevention

Track swaps per pass. Break early if no swaps (already sorted). Reduce inner loop range each pass.

DodaTech Tools

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FAQ