随笔分类 -  LeetCode

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记录LeetCode网站中已完成的题目
Jump Game II
摘要：Description:Given an array of non-negative integers, you are initially positioned at the first index of the array.Each element in the array represents... 阅读全文
posted @ 2015-09-06 09:04 Rosanne 阅读(161) 评论(0) 推荐(0)
N-Queens II
摘要：Description:Follow up for N-Queens problem.Now, instead outputting board configurations, return the total number of distinct solutions.Code:#define NU... 阅读全文
posted @ 2015-09-06 08:35 Rosanne 阅读(143) 评论(0) 推荐(0)
N-Queens
摘要：Description:Given an integern, return all distinct solutions to then-queens puzzle.Each solution contains a distinct board configuration of then-queen... 阅读全文
posted @ 2015-09-05 16:58 Rosanne 阅读(166) 评论(0) 推荐(0)
Longest Substring Without Repeating Characters
摘要：Description:Given a string, find the length of the longest substring without repeating characters. For example, the longest substring without repeatin... 阅读全文
posted @ 2015-09-02 16:33 Rosanne 阅读(144) 评论(0) 推荐(0)
Longest Palindromic Substring
摘要：Description:Given a stringS, find the longest palindromic substring inS. You may assume that the maximum length ofSis 1000, and there exists one uniqu... 阅读全文
posted @ 2015-09-02 15:38 Rosanne 阅读(146) 评论(0) 推荐(0)
Minimum Window Substring
摘要：Description:Given a string S and a string T, find the minimum window in S which will contain all the characters in T in complexity O(n).For example,S=... 阅读全文
posted @ 2015-09-02 15:11 Rosanne 阅读(157) 评论(0) 推荐(0)
Longest Common Prefix
摘要：Description：Write a function to find the longest common prefix string amongst an array of strings.（最长公共字串）Code：string merge(string&str1, string&str2) ... 阅读全文
posted @ 2015-09-01 10:36 Rosanne 阅读(186) 评论(0) 推荐(0)
Longest Substring Without Repeating Characters
摘要：Description：Given a string, find the length of the longest substring without repeating characters. For example, the longest substring without repeatin... 阅读全文
posted @ 2015-09-01 10:01 Rosanne 阅读(156) 评论(0) 推荐(0)
Implement strStr()
摘要：Description:Implement strStr().Returns the index of the first occurrence of needle in haystack, or -1 if needle is not part of haystack.Code1:vector g... 阅读全文
posted @ 2015-08-31 20:28 Rosanne 阅读(158) 评论(0) 推荐(0)
Number of Digit One
摘要：Description：Given an integer n, count the total number of digit 1 appearing in all non-negative integers less than or equal to n.For example:Given n =... 阅读全文
posted @ 2015-08-31 12:42 Rosanne 阅读(185) 评论(0) 推荐(0)
Implement Queue using Stacks
摘要：Description：Implement the following operations of a queue using stacks.push(x) -- Push element x to the back of queue.pop() -- Removes the element fro... 阅读全文
posted @ 2015-08-23 11:13 Rosanne 阅读(169) 评论(0) 推荐(0)
Binary Tree Paths
摘要：Description:Given a binary tree, return all root-to-leaf paths.For example, given the following binary tree: 1 / \2 3 \ 5All root-to-leaf pat... 阅读全文
posted @ 2015-08-23 10:31 Rosanne 阅读(191) 评论(0) 推荐(0)
Single Number III
摘要：Description:Given an array of numbersnums, in which exactly two elements appear only once and all the other elements appear exactly twice. Find the tw... 阅读全文
posted @ 2015-08-23 10:13 Rosanne 阅读(141) 评论(0) 推荐(0)
Ugly Number
摘要：Description：Write a program to check whether a given number is an ugly number.Ugly numbers are positive numbers whose prime factors only include2, 3, ... 阅读全文
posted @ 2015-08-23 09:47 Rosanne 阅读(135) 评论(0) 推荐(0)
Insert Interval
摘要：Description:Given a set ofnon-overlappingintervals, insert a new interval into the intervals (merge if necessary).You may assume that the intervals we... 阅读全文
posted @ 2015-08-21 16:30 Rosanne 阅读(202) 评论(0) 推荐(0)
Insertion Sort List
摘要：Description:Sort a linked list using insertion sort.Code: ListNode* insertionSortList(ListNode* head) { if (head == NULL) return NUL... 阅读全文
posted @ 2015-08-21 16:28 Rosanne 阅读(174) 评论(0) 推荐(0)
Merge Intervals
摘要：Description：Given a collection of intervals, merge all overlapping intervals.For example,Given[1,3],[2,6],[8,10],[15,18],return[1,6],[8,10],[15,18].Co... 阅读全文
posted @ 2015-08-21 13:46 Rosanne 阅读(183) 评论(0) 推荐(0)
Gas Station
摘要：Description:There areNgas stations along a circular route, where the amount of gas at stationiisgas[i].You have a car with an unlimited gas tank and i... 阅读全文
posted @ 2015-08-21 08:59 Rosanne 阅读(305) 评论(0) 推荐(0)
Path Sum II
摘要：Description:Given a binary tree and a sum, find all root-to-leaf paths where each path's sum equals the given sum.For example:Given the below binary t... 阅读全文
posted @ 2015-07-04 17:35 Rosanne 阅读(186) 评论(0) 推荐(0)
Contains Duplicate
摘要：Description:Given an array of integers, find if the array contains any duplicates. Your function should return true if any value appears at least twic... 阅读全文
posted @ 2015-06-27 23:09 Rosanne 阅读(173) 评论(0) 推荐(0)

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