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Leetcode:389.Find the Difference
题目: Given two strings s and t which consist of only lowercase letters. String t is generated by random shuffling string s and then add one more letter ...
分类:其他好文   时间:2017-01-25 14:25:48    阅读次数:187
Python set
python的set和其他语言类似, 是一个无序不重复元素集, 基本功能包括关系测试和消除重复元素. 集合对象还支持union(联合), intersection(交), difference(差)和sysmmetric difference(对称差集)等数学运算. 基本操作 ...
分类:编程语言   时间:2017-01-24 12:17:14    阅读次数:182
What is the difference between J2EE and Spring
来自于:https://www.quora.com/What-is-the-difference-between-J2EE-and-Spring Lot of people specially those who are new in Java world are confused with the ...
分类:编程语言   时间:2017-01-22 09:48:57    阅读次数:243
Description has only two Sentences(欧拉定理 +快速幂+分解质因数)
Description has only two Sentences Problem Description an = X*an-1 + Y and Y mod (X-1) = 0.Your task is to calculate the smallest positive integer k t ...
分类:其他好文   时间:2017-01-22 07:56:47    阅读次数:300
413. 数组切片 Arithmetic Slices
A sequence of number is called arithmetic if it consists of at least three elements and if the difference between any two consecutive elements is the ... ...
分类:编程语言   时间:2017-01-19 02:51:14    阅读次数:249
Leetcode 196. Delete duplicate Emails. (Database)
Write a SQL query to delete all duplicate email entries in a table named Person, keeping only unique emails based on its smallest Id. Id is the primar ...
分类:数据库   时间:2017-01-17 08:03:36    阅读次数:238
Smallest multiple
problem 5:Smallest multiple 题意:求最小的正数,使得其可以被1-20整除 代码如下: 有关函数: 1 long long gcd(long a,long b){ 2 return b==0?a:gcd(b,a%b); 3 } 4 5 long long lcm(long ...
分类:其他好文   时间:2017-01-16 21:24:11    阅读次数:190
redis5--set的操作
Set集合类型(1)介绍redis的set是string类型的无序集合set元素最大可以包含(2的32次方-1)个元素关于set集合类型除了基本的添加删除操作,其它有用的操作还包含集合的取并集(union),交集(intersection),差集(difference)。通过这些操作可以很容易的实现 ...
分类:其他好文   时间:2017-01-16 00:00:15    阅读次数:339
关于autoconf
1 the difference between AC_ARG_ENABLE and AC_ARG_WITH AC_ARG_ENABLE是enable一个feature,该feature所对应的源码包括在本软件的源码中, 该选项是控制该源码对应的feature要不要被支持。 AC_ARG_WITH是 ...
分类:其他好文   时间:2017-01-14 21:56:47    阅读次数:263
Min Stack
Implement a stack with min() function, which will return the smallest number in the stack. It should support push, pop and min operation all in O(1) c ...
分类:其他好文   时间:2017-01-10 10:13:00    阅读次数:146
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