Bubble Sort Algorithm Walkthrough & Code in Java

Bubble Sort, one of the easiest sorting algorithms to understand, but probably the worst one you'd actually use. In this video we walk through what bubble sort does, why it's called "bubble", how to code it from scratch, and then break down the time + space complexity so you understand exactly when you'd reach for it (almost never , but it's a perfect first step). 🧠 Topics covered • What sorting + bubble sort actually mean • How bubble sort works step by step (with whiteboard) • Coding bubble sort from scratch • Time complexity analysis (best / worst / average O(n²)) • Space complexity (O(1) in-place) • When it's actually useful (small inputs, nearly sorted data) • Optimizations (early-exit when no swaps happen) ⏱️ Chapters 00:00 Intro 02:34 How bubble sort works 10:12 Coding bubble sort 20:57 Time complexity 21:30 Space complexity #bubblesort #sortingalgorithms #dsa #algorithms #computerscience #datastructures #bougseycodes