Day 17: Graphs BFS and DFS

0 of 4 tasks completed0%

Week 3 Context

4 remaining

Coding dfs

LC 200. DFS vs BFS vs Union-Find. Mutate grid vs visited set.

Study

Coding graph

LC 133. Hash map old→new. BFS clone. Handle disconnected nodes.

Study

Coding bfs

LC 127. BFS on implicit graph. Wildcard bucket to avoid O(n²) compares.

Study

System design discovery

Client-side vs server-side. Health, TTL, and what happens on a stale endpoint.

Study