Limited Algorithm

Ctrlk

Summary
Hash & TreeMap
Queue &Stack & PQ
Hybrid Data Structure
Graph
Graph Backtracking and Others
Tree
Pure Recursion & Backtracking
Dynamic Programming
Others
Array& LinkedList & String
Adavance Two Pointer
Advance Sliding Window
Advance Binary Search
Advance Young's Matrix
Java Knowledge

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Hash & TreeMap
Practice 2 TreeMap & TreeSet

Question 1 Find closest value

PreviousTreeMap& TreeSet Basic Implement NextQuestion 2: Find two elements distance