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101. Symmetric Tree
Given a binary tree, check whether it is a mirror of itself (ie, symmetric around its center). For example, this binary tree [1,2,2,3,4,4,3] is symmet ...
分类:其他好文   时间:2017-10-22 21:47:15    阅读次数:163
洛谷P1607 [USACO09FEB]庙会班车Fair Shuttle
题目描述 Although Farmer John has no problems walking around the fair to collect prizes or see the shows, his cows are not in such good shape; a full day ...
分类:其他好文   时间:2017-10-19 11:07:31    阅读次数:188
Spring AOP @Around @Before @After 区别
此段小代码演示了spring aop中@Around @Before @After三个注解的区别@Before是在所拦截方法执行之前执行一段逻辑。@After 是在所拦截方法执行之后执行一段逻辑。@Around是可以同时在所拦截方法的前后执行一段逻辑。 代码demo SVN svn://gitee. ...
分类:编程语言   时间:2017-10-17 15:12:21    阅读次数:279
java框架篇---spring aop两种配置方式
第一种:注解配置AOP 注解配置AOP(使用 AspectJ 类库实现的),大致分为三步: 1. 使用注解@Aspect来定义一个切面,在切面中定义切入点(@Pointcut),通知类型(@Before, @AfterReturning,@After,@AfterThrowing,@Around). ...
分类:编程语言   时间:2017-10-16 17:57:22    阅读次数:208
Vim的文本对象
Vim的文本对象(text object)由两个字符组成,第一个字符永远是i或是a。一般说来, 以i开头的文本对象会选择分隔符内部的文本,而以a开头的文本对象则会选择包括分隔符在内的整个文本。为了便于记忆,可以把i 想成“inside”,而把a想成 “around” 或“all”。Vim的文本对象主 ...
分类:系统相关   时间:2017-10-12 14:03:28    阅读次数:195
Find files
As we have wandered(徘徊,漫步) around our Linux system,one thing has become abundantly(丰富的,大量的,十分清楚的) clear: a typical Linux system has a lot of files! Th ...
分类:其他好文   时间:2017-10-08 15:25:38    阅读次数:178
Codeforces Round #439 (Div. 2) Problem E (Codeforces 869E) - 暴力 - 随机化 - 二维树状数组 - 差分
Adieu l'ami. Koyomi is helping Oshino, an acquaintance of his, to take care of an open space around the abandoned Eikou Cram School building, Oshino's ...
分类:编程语言   时间:2017-10-07 20:48:57    阅读次数:256
hdu 2828 Buy Tickets
Buy Tickets Problem Description Railway tickets were difficult to buy around the Lunar New Year in China, so we must get up early and join a long queu ...
分类:其他好文   时间:2017-10-06 17:33:57    阅读次数:168
P1607 [USACO09FEB]庙会班车Fair Shuttle
题目描述 Although Farmer John has no problems walking around the fair to collect prizes or see the shows, his cows are not in such good shape; a full day ...
分类:其他好文   时间:2017-10-06 12:59:47    阅读次数:152
BZOJ 1621 [Usaco2008 Open]Roads Around The Farm分岔路口:分治 递归
题目链接:http://www.lydsy.com/JudgeOnline/problem.php?id=1621 题意: 约翰的N(1≤N≤1,000,000,000)只奶牛要出发去探索牧场四周的土地。 她们将沿着一条路走,一直走到三岔路口(可以认为所有的路口都是这样的)。 这时候,这一群奶牛可能 ...
分类:其他好文   时间:2017-09-29 23:06:41    阅读次数:235
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