Choice of Pivot Element

There are many different choices for picking pivots.

• Always pick the first element as a pivot.
• Always pick the last element as a pivot (implemented below)
• Pick a random element as a pivot.
• Pick the middle as the pivot.

Quick Sort is a widely used sorting algorithm known for its efficiency and speed. It follows the divide-and-conquer paradigm, sorting an array by selecting a pivot element and partitioning the other elements into two sub-arrays according to whether they are less than or greater than the pivot. In this article, we will explore the implementation of Quick Sort in PHP.

Quick Sort is a sorting algorithm based on the Divide and Conquer algorithm. It picks an element as a pivot and partitions the given array around the picked pivot by placing the pivot in its correct position in the sorted array.