Lecture 4: Quicksort, Randomized Algorithms | Introduction to Algorithms (SMA 5503) | Electrical Engineering and Computer Science | MIT OpenCourseWare

15 sorting algorithms visualized in 6 minutes

I learned sorting algorithms back in college, but didn’t care much about them back then. But now, working in industry, I really get why good algorithms actually matter 🙂 Here is a visual comparison of common sorting algorithms, showing how different strategies rearrange unordered data into sorted order 😎👆 ✅ Bubble sort: Painfully slow at O(n²) — compares everything to everything. ✅ Insertion sort: Also O(n²), but smoother when data is already mostly sorted. ✅ Merge sort: Consistently fast at