Clone an undirected graph. Each node in the graph contains a label and a list of its neighbors. OJ's undirected graph serialization: Nodes are labeled uniquely. We use # as a separator for each node, and , as a separator for node label and each neigh…

LeetCode Algorithm 原文出处:[LeetCode] 算法参考:[陈皓 coolshell] 1. Two Sum 3. Longest Substring Without Repeating Characters 5. Longest Palindromic Substring 6. ZigZag Conversion 7. Reverse Integer 8. String to Integer (atoi) 9. Palindrome Number 12. Integer…

Given a string S, find the longest palindromic substring in S. You may assume that the maximum length of S is 1000, and there exists one unique longest palindromic substring. Tags: String 容易想到的思路(可以解但会超时): class Solution { public: string longestPalin…

Clone Graph题解 原创文章,拒绝转载 题目来源:https://leetcode.com/problems/clone-graph/description/ Description Clone an undirected graph. Each node in the graph contains a label and a list of its neighbors. OJ's undirected graph serialization: Nodes are labeled uni…

package Graph; import java.util.ArrayDeque; import java.util.ArrayList; import java.util.Collections; import java.util.HashMap; import java.util.HashSet; import java.util.LinkedList; import java.util.List; import java.util.Map; import java.util.Prior…

Given an undirected graph, return true if and only if it is bipartite. Recall that a graph is bipartite if we can split it's set of nodes into two independent subsets A and B such that every edge in the graph has one node in A and another node in B.…

原题链接在这里:https://leetcode.com/problems/is-graph-bipartite/ 题目: Given an undirected graph, return true if and only if it is bipartite. Recall that a graph is bipartite if we can split it's set of nodes into two independent subsets A and B such that eve…

Clone an undirected graph. Each node in the graph contains a label and a list of its neighbors. OJ's undirected graph serialization: Nodes are labeled uniquely. We use # as a separator for each node, and , as a separator for node label and each neigh…

Clone an undirected graph. Each node in the graph contains a label and a list of its neighbors. OJ's undirected graph serialization: Nodes are labeled uniquely. We use # as a separator for each node, and , as a separator for node label and each neigh…

类似于二叉树的三种遍历,我们能够基于遍历的模板做非常多额外的事情,图的两种遍历,深度和广度模板相同也能够做非常多额外的事情,这里举例利用深度优先遍历的模板来进行复制,深度优先中,我们先訪问第一个结点,接着訪问第一个邻接点,再訪问邻节点的邻节点.... class Solution: # @param node, a undirected graph node # @return a undirected graph node def cloneGraph(self, node): if None…