2014年11月17日
Leetcode-Rotate List
摘要： Given a list, rotate the list to the right by k places, where k is non-negative.For example:Given 1->2->3->4->5->NULL and k = 2,return 4->5->1->2->3->... 阅读全文
posted @ 2014-11-17 04:42 LiBlog 阅读(131) 评论(0) 推荐(0) 编辑
Leetcode-Unique Paths II
摘要： Follow up for "Unique Paths":Now consider if some obstacles are added to the grids. How many unique paths would there be?An obstacle and empty space i... 阅读全文
posted @ 2014-11-17 04:17 LiBlog 阅读(116) 评论(0) 推荐(0) 编辑
Leetcode-Unique Paths
摘要： A robot is located at the top-left corner of a m x n grid (marked 'Start' in the diagram below).The robot can only move either down or right at any po... 阅读全文
posted @ 2014-11-17 04:05 LiBlog 阅读(125) 评论(0) 推荐(0) 编辑
Leetcode-Minimum Path Sum
摘要： Given a m x n grid filled with non-negative numbers, find a path from top left to bottom right which minimizes the sum of all numbers along its path.N... 阅读全文
posted @ 2014-11-17 00:30 LiBlog 阅读(122) 评论(0) 推荐(0) 编辑
Leetcode-Sqrt(x)
摘要： Implement int sqrt(int x).Compute and return the square root of x.Analysis:Using binary search to find the solution. However, what need to be consider... 阅读全文
posted @ 2014-11-17 00:18 LiBlog 阅读(170) 评论(0) 推荐(0) 编辑
2014年11月16日
Leetcode-Set Matrix Zeroes
摘要： Given 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 you use extra spac... 阅读全文
posted @ 2014-11-16 23:27 LiBlog 阅读(150) 评论(0) 推荐(0) 编辑
Leetcode-Search a 2D Matrix
摘要： Write an efficient algorithm that searches for a value in an m x n matrix. This matrix has the following properties:Integers in each row are sorted fr... 阅读全文
posted @ 2014-11-16 22:54 LiBlog 阅读(108) 评论(0) 推荐(0) 编辑
Leetcode-Combinations
摘要： Given two integers n and k, return all possible combinations of k numbers out of 1 ... n. For example, If n = 4 and k = 2, a solution is: Have you met 阅读全文
posted @ 2014-11-16 09:04 LiBlog 阅读(156) 评论(0) 推荐(0) 编辑
Leetcode-Word Search
摘要： Given 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, where "adjace... 阅读全文
posted @ 2014-11-16 08:40 LiBlog 阅读(151) 评论(0) 推荐(0) 编辑
Leetcode-Remove Duplicates from Sorted Array II
摘要： Follow up for "Remove Duplicates":What if duplicates are allowed at most twice?For example,Given sorted array A = [1,1,1,2,2,3],Your function should ... 阅读全文
posted @ 2014-11-16 08:08 LiBlog 阅读(120) 评论(0) 推荐(0) 编辑