Building Intuition for Big-O by Tracing Code Line by Line Complexity analysis becomes intuitive when you count operations by actually tracing through examples. Practice output prediction problems at PyCodeIt. Most Big-O explanations are abstract.
Source: [Dev.to](https://dev.to/ameer_abdullah_68d48c8496/building-intuition-for-big-o-by-tracing-code-line-by-line-17d1)