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【leetcode】First Missing Positive
Given an unsorted integer array, find the first missing positive integer.For example,Given[1,2,0]return3,and[3,4,-1,1]return2.Your algorithm should ru...
分类:其他好文   时间:2014-07-22 22:52:33    阅读次数:166
Hive基本命令整理
创建表: hive> CREATE TABLE pokes (foo INT, bar STRING); Creates a table called pokes with two columns, the first being an integer and the other a string....
分类:其他好文   时间:2014-07-22 22:50:54    阅读次数:262
poj 2046&&poj1961KMP 前缀数组
Power StringsTime Limit: 3000 MS Memory Limit: 65536 KB64-bit integer IO format: %I64d , %I64u Java class name: Main[Submit] [Status] [Discuss]Descrip...
分类:其他好文   时间:2014-07-22 09:00:03    阅读次数:256
java.util.concurrent.AtomicInteger
AtomicInteger,一个提供原子操作的Integer的类。在Java语言中,++i和i++操作并不是线程安全的,在使用的时候,不可避免的会用到synchronized关键字。而AtomicInteger则通过一种线程安全的加减操作接口。 来看Ato...
分类:编程语言   时间:2014-07-22 08:10:35    阅读次数:196
【leetcode刷题笔记】Roman to Integer
Given a roman numeral, convert it to an integer.Input is guaranteed to be within the range from 1 to 3999.题解:转换的方法:从左往右扫描罗马字符,如果当前的字符对应的数字比上一个数字小,就直接加...
分类:其他好文   时间:2014-07-21 10:05:42    阅读次数:223
【leetcode刷题笔记】Integer to Roman
Given an integer, convert it to a roman numeral.Input is guaranteed to be within the range from 1 to 3999.题解:基本的罗马字符和数字对应如下表所示:罗马字符数字I1V5X10L50C100D50...
分类:其他好文   时间:2014-07-21 10:05:16    阅读次数:286
ZOJ1204——Additive equations(DFS)
Additive equationsDescription We all understand that an integer set is a collection of distinct integers. Now the question is: given an integer set...
分类:其他好文   时间:2014-07-21 09:35:45    阅读次数:293
LeetCode || Palindrome Number
Determine whether an integer is a palindrome. Do this without extra space. 判断一个int值是否为回文数。 本题有几点需要注意: (1)不能用额外存储空间,也就是说只能用常数空间解决;诸如将int转换为string再去比较字符是不可行的; (2)判断回文数的方法有两个:从中间开始向两头判断、从两头向中间判断;后者更简...
分类:其他好文   时间:2014-07-19 23:22:39    阅读次数:345
UVA - 501 Black Box (优先队列或vector)
Description   Black Box  Our Black Box represents a primitive database. It can save an integer array and has a special i variable. At the initial moment Black Box is empty and...
分类:其他好文   时间:2014-07-19 12:06:45    阅读次数:199
[zoj 3774]Power of Fibonacci 数论(二次剩余 拓展欧几里得 等比数列求和)
Power of Fibonacci Time Limit: 5 Seconds      Memory Limit: 65536 KB In mathematics, Fibonacci numbers or Fibonacci series or Fibonacci sequence are the numbers of the following integer sequence...
分类:其他好文   时间:2014-07-19 11:48:45    阅读次数:239
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