LeetCode Record

Sort
linked list
Queue
- 1429 first unique number
- 54 Spiral Matrix
Stack (some may involve tree map)
Priority Queue
Map/Set
Binary Search
2 pointer (including sliding window)
BFS (some may be solved by union find)
topological sort
BST binary search tree
DFS / Backtracking
DP
Prefix sum
Union find
Swipe Line
Segment tree
Monotonic Stack/Queue
Trie
- 208. Implement Trie (Prefix Tree)
TreeMap
Sessions
- BFS
  - Avoiding Bears
  - 🥲Taking courses

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Trie

208. Implement Trie (Prefix Tree)

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