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IP属地：澳门
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0/1背包和多重背包问题Given weights and values of n items, put these items in a knapsack of ca...
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A general method for substring problems
Given a binary string of length N and an integer K, we need to find out ...
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关于“经常调用怎么办”这类的follow up
Reverse bits of a given 32 bits unsigned integer.Example:Input: 43261596...
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Union-Find
261. Graph Valid Tree Given n nodes labeled from 0 to n-1 and a list of ...
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Backtracking
A general approach to backtracking questions in Java (Subsets, Permutati...
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In order traversal
99. Recover Binary Search Tree Two elements of a binary search tree (BST...
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Disjoint Set Union (DSU) structure
Sentence Similarity II Given two sentences words1, words2 (each represen...
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Binary search tree
Contains Duplicate III Given an array of integers, find out whether ther...
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Find if share common letters
Maximum Product of Word Lengths Given a string array words, find the max...