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Problem Sum Root to Leaf Numbers
Problem Description:Given a binary tree containing digits from0-9only, each root-to-leaf path could represent a number.An example is the root-to-leaf ...
分类:其他好文   时间:2014-07-07 16:01:34    阅读次数:223
Problem Pascal's Triangle II
Problem Description:Given an indexk, return thekthrow of the Pascal's triangle.For example, givenk= 3,Return[1,3,3,1].Note:Could you optimize your alg...
分类:其他好文   时间:2014-07-07 15:47:17    阅读次数:272
Problem Populating Next Right Pointers in Each Node II
Problem Description:Follow up for problem "Populating Next Right Pointers in Each Node".What if the given tree could be any binary tree? Would your pr...
分类:其他好文   时间:2014-07-07 15:46:01    阅读次数:267
Leetcode Rotate Image
You are given annxn2D matrix representing an image.Rotate the image by 90 degrees (clockwise).Follow up:Could you do this in-place?矩阵的旋转如1 2 34 5 67 8...
分类:其他好文   时间:2014-07-07 15:13:49    阅读次数:181
Eclipse:Some sites could not be found. See the error log for more detail.解决办法
今天遇到了一个奇葩的问题,我把我的sdk tools的版本升级到23后,我在eclipse中尝试升级ADT,发现了这么一个问题,下面分析下原因: 当我在eclipse中选择Help-->Check for updates时,会弹出一个框,如下: 首先解释下这个错误出现的原因: Eclipse在check for updates时,是根据下图列表中所有的Available Softwa...
分类:系统相关   时间:2014-07-01 11:13:52    阅读次数:441
could not bind to address 0.0.0.0:80 no listening sockets available, shutting down
在启动apache服务的时候(service httpd start 启动)出现这个问题。出现这个问题,是因为APACHE的默认端口被占用的缘故.解决方法就是把这个端口占用的程序占用的端口去掉。使用命令:netstat -lnp|grep 80 查看80端口使用如:tcp 0 0 0.0.0.0:8...
分类:其他好文   时间:2014-06-30 22:06:35    阅读次数:319
每日算法之三十七:Rotate Image (图像旋转)
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? 原地图像顺时针旋转90度。因为要求空间复杂度是常数,因此应该迭代旋转操作。 class ...
分类:其他好文   时间:2014-06-30 19:51:53    阅读次数:267
Single Number
题目 Given an array of integers, every element appears twice except for one. Find that single one. Note: Your algorithm should have a linear runtime complexity. Could you implement it witho...
分类:其他好文   时间:2014-06-30 19:38:37    阅读次数:226
Copy List with Random Pointer
题目 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. 方法 publi...
分类:其他好文   时间:2014-06-30 19:36:33    阅读次数:163
Single Number II
题目 Given an array of integers, every element appears three times except for one. Find that single one. Note: Your algorithm should have a linear runtime complexity. Could you implement it...
分类:其他好文   时间:2014-06-30 19:23:18    阅读次数:200
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