摘要：引自：http://www.douban.com/note/330562764/注：此分类仅供大概参考，没有精雕细琢。有不同意见欢迎评论~利用堆栈：http://oj.leetcode.com/problems/evaluate-reverse-polish-notation/http://oj.l... 阅读全文

摘要：Sort ColorsGiven an array with n objects colored red, white or blue, sort them so that objects of the same color are adjacent, with the colors in the ... 阅读全文

摘要：Search for a RangeGiven a sorted array of integers, find the starting and ending position of a given target value.Your algorithm's runtime complexity ... 阅读全文

摘要：Spiral Matrix IIGiven an integer n, generate a square matrix filled with elements from 1 to n2 in spiral order.For example,Given n = 3,You should retu... 阅读全文

摘要：Set Matrix ZeroesGiven a m x n matrix, if an element is 0, set its entire row and column to 0. Do it in place.click to show follow up.Follow up:Did yo... 阅读全文

摘要：Spiral MatrixGiven a matrix of m x n elements (m rows, n columns), return all elements of the matrix in spiral order.For example,Given the following m... 阅读全文

摘要：Word Break IIGiven a string s and a dictionary of words dict, add spaces in s toconstruct a sentence where each word is a valid dictionaryword.Return ... 阅读全文

摘要：Clone GraphClone an undirected graph. Each node in the graph contains a label and a list of its neighbors.OJ's undirected graph serialization:Nodes ar... 阅读全文

摘要：Maximum Product SubarrayFind the contiguous subarray within an array (containing at least one number) which has the largest product.For example, given... 阅读全文

摘要：Populating Next Right Pointers in Each Node IIFollow up for problem "Populating Next Right Pointers in Each Node".What if the given tree could be any ... 阅读全文

摘要：Populating Next Right Pointers in Each Node TotalGiven a binary tree struct TreeLinkNode { TreeLinkNode *left; TreeLinkNode *right; TreeLinkNode *next... 阅读全文

摘要：Word SearchGiven a 2D board and a word, find if the word exists in the grid.The word can be constructed from letters of sequentially adjacent cell, wh... 阅读全文

摘要：String to Integer (atoi) Implement atoi to convert a string to an integer.Hint: Carefully consider all possible input cases. If you want a challenge, ... 阅读全文

摘要：Jump GameGiven an array of non-negative integers, you are initially positioned at the first index of the array.Each element in the array represents yo... 阅读全文

摘要：Q:Given an unsorted integer array, find the first missing positive integer.For example,Given [1,2,0]return 3,and [3,4,-1,1]return 2.Your algorithm sho... 阅读全文

摘要：Add Two NumbersYou are given two linked lists representing two non-negative numbers. The digits are stored in reverse order and each of their nodes co... 阅读全文

摘要：Given a string s, partition s such that every substring of the partition is a palindrome.Return all possible palindrome partitioning of s.For example,... 阅读全文

摘要：Reverse Nodes in k-GroupGiven a linked list, reverse the nodes of a linked listkat a time and return its modified list.If the number of nodes is not a... 阅读全文