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[LeetCode] Lowest Common Ancestor of a Binary Tree 二叉树的最小共同父节点
Given a binary tree, find the lowest common ancestor (LCA) of two given nodes in the tree.According to thedefinition of LCA on Wikipedia: “The lowest ...
分类:其他好文   时间:2015-07-13 07:49:28    阅读次数:148
XCode7 Beta版无法使用iOS8.4真机调试的的解决办法
在XCode7 Beta下如果使用iOS8.4版的真机进行调试,XCode会提示:“Could not find Developer Disk Image”解决方法:如果你有XCode6.4版,进入/Applications/Xcode.app/Contents/Developer/Platform...
分类:移动开发   时间:2015-07-13 06:27:54    阅读次数:139
linux下常用的查找文件命令
一、常用的查找命令我们经常在linux要查找某个文件,但不知道放在哪里了,可以使用下面的一些命令来搜索:which查看可执行文件的位置whereis查看文件的位置locate配合数据库查看文件位置find实际搜寻硬盘查询文件名称二、which命令的常用方法which是通过PATH环境变量到该路径内..
分类:系统相关   时间:2015-07-13 01:00:39    阅读次数:237
LeetCode3:Longest Substring Without Repeating Characters
Given a string, find the length of the longest substring without repeating characters. For example, the longest substring without repeating letters for “abcabcbb” is “abc”, which the length is 3. For “...
分类:其他好文   时间:2015-07-13 00:51:06    阅读次数:112
杭电2095--find your present (2) (异或)
find your present (2)Time Limit: 2000/1000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 18235Accepted Submission(s): ...
分类:其他好文   时间:2015-07-12 23:17:26    阅读次数:144
并查集
用并查集查找根节点,包括三种方法:1.朴素查找法:int find(int x){ int r = x; while(father[r] != r) r = father[r]; return r;}2.路径压缩(递归):int find(int x){ if(...
分类:其他好文   时间:2015-07-12 23:05:37    阅读次数:119
*Best Time to Buy and Sell Stock II
题目:Say you have an array for which theithelement is the price of a given stock on dayi.Design an algorithm to find the maximum profit. You may complet...
分类:其他好文   时间:2015-07-12 22:56:05    阅读次数:126
[LeetCode][JavaScript]Lowest Common Ancestor of a Binary Search Tree
Lowest Common Ancestor of a Binary Search TreeGiven a binary search tree (BST), find the lowest common ancestor (LCA) of two given nodes in the BST.Ac...
分类:编程语言   时间:2015-07-12 20:09:59    阅读次数:137
Linux命令之find(二)
上篇文章已经介绍了expressions的的test,它是find命令最核心的东西,现在介绍expressions的options和actions。 -exec本身其实只是在find执行完之后执行另一条命令,我之前以为-exec类似于管道,find找到的文件会直接被command处理,结果不是这样;若想要达到管道的效果,需要在 command后面添加“{}”,它代表前面找到的文件。...
分类:系统相关   时间:2015-07-12 18:57:42    阅读次数:212
mongodb与SQL常见语句对照
inert into users value(3,5)db.users.insert({a:3,b:5})select a,b from usersdb.users.find({}, {a:1,b:1})select * from usersdb.users.find()select * from ...
分类:数据库   时间:2015-07-12 18:53:05    阅读次数:197
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