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Java中的阻塞队列-SynchronousQueue
SynchronousQueue是一个不存储元素的阻塞队列。每一个put操作必须等待一个take操作,否则不能继续添加元素。SynchronousQueue可以看成是一个传球手,负责把生产者线程处理的数据直接传递给消费者线程。队列本身并不存储任何元素,非常适合于传递性场景,比如在一个线程中使用的数据 ...
分类:编程语言   时间:2019-04-25 18:51:05    阅读次数:154
leetcode [207]Course Schedule
There are a total of n courses you have to take, labeled from 0 to n-1. Some courses may have prerequisites, for example to take course 0 you have to ...
分类:其他好文   时间:2019-04-25 17:36:32    阅读次数:113
科学计算和可视化
numpy库 NumPy 通常与 SciPy(Scientific Python)和 Matplotlib(绘图库)一起使用,是一个强大的科学计算环境。 一、数组常用函数 1.where() 按条件返回数组的索引值 2.take(a,index) 从数组a中按照索引index取值 3.linspac ...
分类:其他好文   时间:2019-04-25 01:06:12    阅读次数:181
[codewars_python]Sum of Digits / Digital Root
Instructions In this kata, you must create a digital root function. A digital root is the recursive sum of all the digits in a number. Given n, take t ...
分类:编程语言   时间:2019-04-05 18:24:09    阅读次数:196
codeforces401C
Team CodeForces - 401C Now it's time of Olympiads. Vanya and Egor decided to make his own team to take part in a programming Olympiad. They've been be ...
分类:其他好文   时间:2019-04-03 20:39:41    阅读次数:166
[React] Validate React Forms with Formik and Yup
Validating forms in React can take several lines of code to build. However, Formik's ErrorMessage component and Yup simplify that process. ...
分类:其他好文   时间:2019-04-02 18:34:33    阅读次数:166
手写分页
这是手写分页前台代码 点击空间之后获取onclick事件,调用ajax请求后台 页面首次加载,请求后台查询数据库,返回查询到的数据进行绑定 首次加载后台代码 把查询到的数据用Linq语句进行分页 Skip是跳过多少条,Take是从你跳过的位置开始取多少条数据 根据你前台获取的点击事件对你定义的变量进 ...
分类:其他好文   时间:2019-04-02 10:57:04    阅读次数:149
C# Linq 交集、并集、差集、去重
其实只要明白 LINQ查询操作符的Distinct、Union、Concat、Intersect、Except、Skip、Take、SkipWhile、TakeWhile、Single、SingleOrDefault、Reverse、SelectMany,Aggregate()的使用,一些简单的操作 ...
分类:Windows程序   时间:2019-03-28 12:23:14    阅读次数:245
Best Cow Line---POJ 3617(贪心)
FJ is about to take his N (1 ≤ N ≤ 2,000) cows to the annual"Farmer of the Year" competition. In this contest every farmer arranges his cows in a line ...
分类:其他好文   时间:2019-03-28 00:21:33    阅读次数:154
[Javascript] Avoiding Mutations in JavaScript with Immutable Data Structures
To demonstrate the difference between mutability and immutability, imagine taking a drink from a glass of water. If our glass is mutable, when we take ...
分类:编程语言   时间:2019-03-23 22:13:01    阅读次数:114
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