bfs 20
- Greedy: Jump Game II — Kotlin Solution
- Advanced Graphs: Alien Dictionary — Kotlin Solution
- 1-D DP: Coin Change — Kotlin Solution
- Graphs: Word Ladder — Kotlin Solution
- Graphs: Walls And Gates — Kotlin Solution
- Graphs: Surrounded Regions — Kotlin Solution
- Graphs: Rotting Oranges — Kotlin Solution
- Graphs: Pacific Atlantic Water Flow — Kotlin Solution
- Graphs: Number of Islands — Kotlin Solution
- Graphs: Max Area of Island — Kotlin Solution
- Graphs: Course Schedule — Kotlin Solution
- Graphs: Course Schedule II — Kotlin Solution
- Graphs: Clone Graph — Kotlin Solution
- Trees: Serialize And Deserialize Binary Tree — Kotlin Solution
- Trees: Maximum Depth of Binary Tree — Kotlin Solution
- Trees: Invert Binary Tree — Kotlin Solution
- Trees: Binary Tree Right Side View — Kotlin Solution
- Trees: Binary Tree Level Order Traversal — Kotlin Solution
- Trees: Invert Binary Tree — Kotlin Solution
- Dynamic Programming: Coin Change — Kotlin Solution