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Practice Problems

80 curated problems, each with a written guide and video walkthrough.

Aaron Leslie

Walkthroughs by Aaron Leslie

Former Amazon tech lead

Flux Balance · Free walkthrough

See the CodeCrack Method in action

A six-step approach to unfamiliar coding problems. Watch Aaron apply it to Flux Balance, from brute force to an efficient solution.

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01

Foundations

Related course lessons
Included with Complete Access
  1. Tooth SumFreeEasy
  2. Flux BalanceFreeMedium

02

Core Patterns

03

Trees, Graphs & Search

04

Optimization