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LeetCode:Rotate Image
题目描述: You are given an n x n 2D matrix representing an image. Rotate the image by 90 degrees (clockwise). Follow up: Could you do this in-place? 思路:先将行顺序reverse,然后再对每个处于下三角区域的元素rotate。 ...
分类:其他好文   时间:2014-12-25 11:18:52    阅读次数:125
【oracle】oracledba23 change the backup retention policy to retain the backups for a sma ller period o
An RMAN backup job fails, displaying the following error:   ORA-19809: limit exceeded for recovery files   Your analysis shows that the Flash Recovery area is full. Which two a ctions could you tak...
分类:数据库   时间:2014-12-25 10:02:40    阅读次数:183
[LeetCode]Copy List with Random Pointer
A linked list is given such that each node contains an additional random pointer which could point to any node in the list or null. Return a deep copy of the list. 利用hashMap存储,原始的node作为key,new的nod...
分类:其他好文   时间:2014-12-24 22:53:14    阅读次数:187
leetcode之图片(矩阵)旋转
题目: You are given an n x n 2D matrix representing an image. Rotate the image by 90 degrees (clockwise). Follow up: Could you do this in-place? 思路: 题目的关键在in-place,否则就太容易了,为了达到in-place只能...
分类:其他好文   时间:2014-12-24 22:46:59    阅读次数:138
[LeetCode]117.Populating Next Right Pointers in Each Node II
【题目】 Follow up for problem "Populating Next Right Pointers in Each Node". What if the given tree could be any binary tree? Would your previous solution still work? Note: You may only use...
分类:其他好文   时间:2014-12-24 20:13:31    阅读次数:151
LeetCode Problem 9:Palindrome Number回文数
描述:Determine whether an integer is a palindrome. Do this without extra space.Some hints:Could negative integers be palindromes? (ie, -1)If you are thi...
分类:其他好文   时间:2014-12-24 19:57:39    阅读次数:127
curl 无法访问 https 协议
转自http://blog.mutoo.im/2013/12/curl-could-not-communicate-with-https-sites.htmlmac升级为10.10以后,homebrew升级挂了,curl提示连接ssl失败解决办法mvim ~/.curlrcproxy = http:...
分类:Web程序   时间:2014-12-24 19:56:31    阅读次数:238
Sum Root to Leaf Numbers
题目:Given a binary tree containing digits from0-9only, each root-to-leaf path could represent a number.An example is the root-to-leaf path1->2->3which ...
分类:其他好文   时间:2014-12-24 17:39:33    阅读次数:147
Could not load the FreeMarker template named 'select'
目前项目使用struts2, 所以页面中就使用到了struts2的标签,但是今天在做新的功能的时候突然出现 “Could not load the FreeMarker template named 'select'” 这样的错误, 看错误信息是找不到struts2  的select 标签,但是其他页面也都用到了select,也没有出现错误。最后发现问题出在了action中,我在action中定...
分类:其他好文   时间:2014-12-24 14:44:38    阅读次数:107
Swift 错误 - 错误集
一、Could not find an overload for “init” that accepts the supplied arguments错误信息:解决方案:let imageStatesImage: Array = [UIImage(named: "x")!, UIImage(name...
分类:编程语言   时间:2014-12-24 11:26:55    阅读次数:155
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