wtg
Contents
Chap1. BFS
Logical Thinking Steps
Shortest Distance from
Walls And Gates
Bi-Directional BFS
Word Ladder II
Remove invalid parenthesis
Compare Version Number
Chap0. Array
Two Ptr
Range Minimum Query
Permuation and Combination
Permutation VS Combination
Some Variant
Combination Sum III
ContainsDup
Chap2. DFS
Expression Add Operators
Course Schedule
Chap3. Dynamic Programming
DP State
DP with Array
DP with String
DP with Matrix
General and Fancy
DP with Tree
Tree1
Chap4. Tree
About Tree
Tree Reconstruct
Basics
Tree2List
Counter Smaller After Itself
Count of Range Sum
Tree Traversal
kth smallest in BST
BST Property
Tree Path
Convert SortedList to Balanced BST
Tree with probability
Tree Categories
Tournament Tree
Tree with Return Type
Egs
LCA topic
Chap5. LinkedList
LinkedList
Two Ptr
Chap6. Math
Number
Chap7. TrieTree
Trie Practice
Chap8. Iterators
Egs
Intro
Eg2
IterEg3
Chap9. Interval
About it
Eg1 intervals
Eg2 Interval with weights
Interval Tree
Interval Tree Implementation
Count of Range Sum
Eg3 Area
Chap10. Graph
Graph Sparsity TopoOrder
Chap11. Bit Operation
Intro_Bit
Appendix
Divide and Conquer 常见技巧
Backtrack 方法
Binary Search
Sliding Window
LinkedList Trick and middle
Others
One More Step
Tips
WayOfThinking
Graph
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Number
Number
Magic Number
[0,1] 问题与binary结合 表示选或不选. 如果每次的choice都相同。(数学题尤其明显)
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