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Binary SearchFor a given sorted array (ascending order) and a target number, find the first index of this number in O(log n) time complexity.If the ta
1. Binary Tree DFS Traversal1.1 RecursionThis method will cost O(n) time with no extra space. The space is assigned by system(which could be O(1) or O
1. Dynamic ProgrammingA method for solving a complex problem by breaking it down into a collection of simpler sub-problems. 1.1 When to use One of the
Clone Graph 1234567891011121314151617181920212223242526272829303132333435/** * Definition for undirected graph. * class UndirectedGraphNode { * int la
Data Structure is a way to organize data. It provides some methods to handle data stream, e.g. insert, delete, etc. Linear Data StructureQueue & S
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I am Chen, a Chinese living in the United States. Music lover. I am trying to learn Korean just because I really want to understand the meanings of Ep