Motivation
Lesson 2 of 9 in Coddy's Quick Sort - DSA Series course.
Quick Sort works by choosing a pivot and partitioning the array around it: smaller values go to one side, larger values to the other. Each side is then sorted the same way.
Why learn Quick Sort?
- Fast in practice: on average it runs in O(n log n) time and is often faster than other O(n log n) sorts.
- Widely used: many standard library sort functions are based on Quick Sort or a variant of it.
- Divide and conquer: it reinforces a pattern used across many advanced algorithms.
- Pivot matters: it teaches how a single design choice (the pivot) affects performance, from O(n log n) down to O(n2).
Try it yourself
This lesson doesn't include a code challenge.
Test yourselfThis lesson includes a short quiz. Start the lesson to answer it and track your progress.
