Quick Sort Explained Visually | Pivot, Partition, and Recursion

Quicksort is a fast, in-place sorting algorithm that works by selecting a pivot element and partitioning the array so smaller elements go left and larger elements go right. The algorithm then recursively applies the same process to the left and right subarrays. With good pivot selection, quicksort achieves O(n log n) average time complexity, though it can degrade to O(n²) in worst cases with poor pivot choices. The partitioning process uses two pointers scanning from opposite ends, swapping misplaced elements until they cross, then placing the pivot in its correct position.