2015年1月11日

Rotate Image

摘要： You are given annxn2D matrix representing an image.Rotate the image by 90 degrees (clockwise).Follow up:Could you do this in-place?我直接开了一个大小相同的数组resul... 阅读全文

posted @ 2015-01-11 14:17 luckygxf 阅读(154) 评论(0) 推荐(0) 编辑

Linked List Cycle II

摘要： Given a linked list, return the node where the cycle begins. If there is no cycle, returnnull.Follow up:Can you solve it without using extra space?题意判... 阅读全文

posted @ 2015-01-11 13:35 luckygxf 阅读(180) 评论(0) 推荐(0) 编辑

Search a 2D Matrix

摘要： Write an efficient algorithm that searches for a value in anmxnmatrix. This matrix has the following properties:Integers in each row are sorted from l... 阅读全文

posted @ 2015-01-11 13:00 luckygxf 阅读(179) 评论(0) 推荐(0) 编辑

Sort Colors

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

posted @ 2015-01-11 01:11 luckygxf 阅读(171) 评论(0) 推荐(0) 编辑

Combinations

摘要： Given two integersnandk, return all possible combinations ofknumbers out of 1 ...n.For example,Ifn= 4 andk= 2, a solution is:[ [2,4], [3,4], [2,3],... 阅读全文

posted @ 2015-01-11 00:46 luckygxf 阅读(171) 评论(0) 推荐(0) 编辑

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