Sorting Visualizer — Bubble, Merge, Quick, Heap Animated | Free Tool

SORTVIZ

Sorting Algorithm Visualizer
Bubble · Insertion · Selection · Merge · Quick · Heap

Bubble Sort

Insertion Sort

Selection Sort

Merge Sort

Quick Sort

Heap Sort

Size: 50

Speed: 5

Pattern:

Unsorted

Comparing

Swapping

Pivot

Merging

Sorted

Comparisons:0

Swaps:0

Accesses:0

Time:—

Bubble Sort

Best caseO(n)

AverageO(n²)

Worst caseO(n²)

SpaceO(1)

StableYes

Description

Repeatedly steps through the list, compares adjacent elements and swaps them if out of order. Simple but inefficient for large datasets.

Sorting Algorithm Visualizer — Free & Interactive

Watch Bubble, Insertion, Selection, Merge, Quick and Heap Sort animate step by step. Adjust array size up to 150 elements, control speed, choose input patterns, export as PNG or animated GIF. 100% browser-based.

Algorithms

Bubble Sort — O(n²) average. Simple, great for learning. Optimized to stop early if already sorted.
Insertion Sort — O(n) best case. Excellent for small or nearly-sorted arrays. Used as a base in Timsort.
Selection Sort — Always O(n²). Minimal swaps. Simple but rarely used in practice.
Merge Sort — O(n log n) guaranteed. Stable. Requires O(n) extra space. Ideal for linked lists.
Quick Sort — O(n log n) average, O(n²) worst. Very cache-friendly. Most standard libraries use a Quick Sort variant.
Heap Sort — O(n log n) guaranteed, O(1) space. Not stable but very consistent. Good when memory is constrained.

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FAQ

Which sorting algorithm is fastest?

Quick Sort is fastest in practice for random data. Merge Sort and Heap Sort guarantee O(n log n). For small or nearly-sorted arrays, Insertion Sort often wins.

What is a stable sort?

A stable sort preserves relative order of equal elements. Bubble, Insertion, and Merge Sort are stable. Selection, Quick, and Heap Sort are not.

How to export a GIF?

Click ⏺ GIF before sorting starts. A red dot shows recording is active. After sorting completes, click again to download the animated GIF.

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