随笔分类 -  leetcode

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字符串算法大全
摘要：1、LCS 2、CSD： 1、s1.length==0,return s2.length; 2、s2.length==0,return s1.length; 3、if s1.charat(i)==s2.charat(j),res[i][j]=res[i-1][j-1] else res[i][j]= 阅读全文
posted @ 2016-08-07 17:55 pku_smile 阅读(225) 评论(0) 推荐(0)
leetcode--Verify Preorder Serialization of a Binary Tree
摘要：One way to serialize a binary tree is to use pre-order traversal. When we encounter a non-null node, we record the node's value. If it is a null node, 阅读全文
posted @ 2016-02-02 11:02 pku_smile 阅读(139) 评论(0) 推荐(0)
leetcode------Bitwise AND of Numbers Range
摘要：标题：Bitwise AND of Numbers Range通过率：25.7%难度：中等Given a range [m, n] where 0 >=1 9 n>>=110 offset+=111 return m<<offset 阅读全文
posted @ 2015-04-23 16:53 pku_smile 阅读(204) 评论(0) 推荐(0)
leetcode-----Remove Linked List Elements
摘要：标题：Remove Linked List Elements通过率：30.5%难度：简单Remove all elements from a linked list of integers that have valueval.ExampleGiven:1 --> 2 --> 6 --> 3 -->... 阅读全文
posted @ 2015-04-23 15:53 pku_smile 阅读(128) 评论(0) 推荐(0)
leetcode------Happy Number
摘要：标题：Happy Number通过率：34.3%难度：简单Write an algorithm to determine if a number is "happy".A happy number is a number defined by the following process: Start... 阅读全文
posted @ 2015-04-23 15:33 pku_smile 阅读(114) 评论(0) 推荐(0)
leetcode------Rotate List
摘要：标题：Rotate List通过率：21.8%难度：中等Given a list, rotate the list to the right bykplaces, wherekis non-negative.For example:Given1->2->3->4->5->NULLandk=2,ret... 阅读全文
posted @ 2015-04-17 10:55 pku_smile 阅读(186) 评论(0) 推荐(0)
leetcode------Gas Station
摘要：标题：Gas Station通过率：25.7%难度：中等There areNgas stations along a circular route, where the amount of gas at stationiisgas[i].You have a car with an unlimite... 阅读全文
posted @ 2015-04-15 21:23 pku_smile 阅读(173) 评论(0) 推荐(0)
leetcode------Reverse Linked List II
摘要：标题：Reverse Linked List II通过率：26.2%难度：中等Reverse a linked list from positionmton. Do it in-place and in one-pass.For example:Given1->2->3->4->5->NULL,m=... 阅读全文
posted @ 2015-04-13 10:29 pku_smile 阅读(195) 评论(0) 推荐(0)
leetcode------Clone Graph
摘要：标题：Clone Graph通过率：23.7%难度：中等OJ's undirected graph serialization:Nodes are labeled uniquely.We use#as a separator for each node, and,as a separator for... 阅读全文
posted @ 2015-04-12 15:40 pku_smile 阅读(160) 评论(0) 推荐(0)
leetcode------Anagrams
摘要：标题：Anagrams通过率：24.3%难度：中等Given an array of strings, return all groups of strings that are anagrams.Note: All inputs will be in lower-case.leetcode没有表述... 阅读全文
posted @ 2015-04-10 10:21 pku_smile 阅读(139) 评论(0) 推荐(0)
leetcode------Simplify Path
摘要：标题：Simplify Path通过率：20.1%难度：中等Given an absolute path for a file (Unix-style), simplify it.For example,path="/home/", =>"/home"path="/a/./b/../../c/", ... 阅读全文
posted @ 2015-04-09 21:27 pku_smile 阅读(203) 评论(0) 推荐(0)
leetcode------Number of Islands
摘要：标题：Number of Islands通过率：22.8%难度：中等Given a 2d grid map of'1's (land) and'0's (water), count the number of islands. An island is surrounded by water and... 阅读全文
posted @ 2015-04-09 15:52 pku_smile 阅读(273) 评论(0) 推荐(0)
leetcode------3Sum Closest
摘要：标题：3Sum Closest通过率：27.0%难度：中等Given an arraySofnintegers, find three integers inSsuch that the sum is closest to a given number, target. Return the sum... 阅读全文
posted @ 2015-04-08 19:28 pku_smile 阅读(134) 评论(0) 推荐(0)
leetcode------4Sum
摘要：标题：4Sum通过率：21.4%难度：中等Given an arraySofnintegers, are there elementsa,b,c, anddinSsuch thata+b+c+d= target? Find all unique quadruplets in the array wh... 阅读全文
posted @ 2015-04-08 19:25 pku_smile 阅读(141) 评论(0) 推荐(0)
leetcode------3Sum
摘要：标题：3Sum通过率：　16.9%难度：中等Given an arraySofnintegers, are there elementsa,b,cinSsuch thata+b+c= 0? Find all unique triplets in the array which gives the s... 阅读全文
posted @ 2015-04-08 19:16 pku_smile 阅读(158) 评论(0) 推荐(0)
leetcode------Binary Tree Right Side View
摘要：标题：Binary Tree Right Side View通过率：27.9%难度：中等Given a binary tree, imagine yourself standing on therightside of it, return the values of the nodes you c... 阅读全文
posted @ 2015-04-06 15:16 pku_smile 阅读(207) 评论(0) 推荐(0)
leetcode------Word Break
摘要：题目：Word Break通过率：22.6%难度：中等Given a stringsand a dictionary of wordsdict, determine ifscan be segmented into a space-separated sequence of one or more ... 阅读全文
posted @ 2015-04-03 22:32 pku_smile 阅读(141) 评论(0) 推荐(0)
leetcode------House Robber
摘要：标题：House Robber通过率：27.5%难度：简单You are a professional robber planning to rob houses along a street. Each house has a certain amount of money stashed, th... 阅读全文
posted @ 2015-04-03 21:03 pku_smile 阅读(229) 评论(0) 推荐(0)
leetcode------Construct Binary Tree from Inorder and Postorder Traversal
摘要：标题：Construct Binary Tree from Inorder and Postorder Traversal通过率：26.7%难度：中等Given inorder and postorder traversal of a tree, construct the binary tree.... 阅读全文
posted @ 2015-04-02 15:51 pku_smile 阅读(149) 评论(0) 推荐(0)
leetcode------Triangle
摘要：标题：Triangle通过率：27.1%难度：中等Given a triangle, find the minimum path sum from top to bottom. Each step you may move to adjacent numbers on the row below.F... 阅读全文
posted @ 2015-03-30 19:31 pku_smile 阅读(160) 评论(0) 推荐(0)

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