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数组链表
83. Remove Duplicates from Sorted List: 2. Add Two Numbers: 21. Merge Two Sorted Lists: 206. Reverse Linked List: ...
分类:编程语言   时间:2019-07-04 09:44:23    阅读次数:81
Ab测试
yum -y install httpd-tools ab -v 查看ab版本 ab –help ab -n1000 -c 10 http://www.91cnm.com/ http://www.91cnm.com/是我的小网站挂在虚拟主机上的 ,-n访问1000次, -c并发10个 ab压力测试返 ...
分类:其他好文   时间:2019-07-03 16:41:30    阅读次数:128
素数环,暴力剪枝
A ring is compose of n circles as shown in diagram. Put natural number 1, 2, ..., n into each circle separately, and the sum of numbers in two adjacen ...
分类:其他好文   时间:2019-07-02 22:44:01    阅读次数:127
[LeetCode#175]Combine Two Tables
Table: Person +-------------+---------+ | Column Name | Type | +-------------+---------+ | PersonId | int | | FirstName | varchar | | LastName | varch... ...
分类:其他好文   时间:2019-07-01 12:15:54    阅读次数:77
【Aizu - ALDS1_1_C】Prime Numbers(素数筛法)
Prime Numbers Descriptions: A prime number is a natural number which has exactly two distinct natural number divisors: 1 and itself. For example, the ...
分类:其他好文   时间:2019-06-29 22:36:17    阅读次数:214
Power Strings
Power Strings 题目描述 Given two strings a and b we define a*b to be their concatenation. For example, if a = "abc" and b = "def" then a*b = "abcdef". If ...
分类:其他好文   时间:2019-06-29 19:19:49    阅读次数:71
【第53题】【062题库】2019年OCP认证062考试新题
53题、choose two The HR user executes the following query on the EMPLOYEES table but does not issue COMMIT, ROLLBACK, or any data definition language (D ...
分类:其他好文   时间:2019-06-27 13:36:45    阅读次数:98
PJzhang:python基础入门的7个疗程-two
猫宁!!! 参考链接:易灵微课-21天轻松掌握零基础python入门必修课-售价29元人民币 https://www.liaoxuefeng.com/wiki/1016959663602400 https://blog.csdn.net/SuperCreators/article/details/8 ...
分类:编程语言   时间:2019-06-26 01:03:12    阅读次数:138
编程语言评价标准
编程语言评价标准 编程语言需要提供足够简单和丰富的概念来表达我们要描述的世界; 并且执行的效率要足够高 Enough of the small talk, how do we go about comparing these two goliaths? In reality this can’t b ...
分类:编程语言   时间:2019-06-25 19:44:59    阅读次数:147
CMU Database Systems - Two-phase Locking
首先锁是用来做互斥的,解决并发执行时的数据不一致问题 如图会导致,不可重复读 如果这里用lock就可以解决,数据库里面有个LockManager来作为master,负责锁的记录和授权 数据库里面的基本的锁类型, 其实就是读锁,写锁 但是如果光是有读写锁,只能解决当个操作互斥和正确,无法解决trans ...
分类:数据库   时间:2019-06-25 15:18:31    阅读次数:143
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