發簡信
IP屬地：加州
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785. Is Graph Bipartite?
Given an undirected graph, return true if and only if it is bipartite. R...
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DFS/BFS
DFS, BFS 假設點的數目為v, time complexity都為O(v)space complexity, BFS worst case...
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562. Longest Line of Consecutive One in Matrix
Given a 01 matrix M, find the longest line of consecutive one in the mat...
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734. Sentence Similarity
Given two sentences words1, words2 (each represented as an array of stri...
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779. K-th Symbol in Grammar
On the first row, we write a 0. Now in every subsequent row, we look at ...
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789. Escape The Ghosts
You are playing a simplified Pacman game. You start at the point (0, 0),...
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802. Find Eventual Safe StatesIn a directed graph, we start at some node and every turn, walk along a ...
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689. Maximum Sum of 3 Non-Overlapping Subarrays
In a given array nums of positive integers, find three non-overlapping s...
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753. Cracking the Safe
There is a box protected by a password. The password is n digits, where ...