Median is the middle value in an ordered integer list. If the size of the list is even, there is no middle value. So the median is the mean of the two middle value. Examples: [2,3,4] , the median is 3 [2,3], the median is (2 + 3) / 2 = 2.5 Design a d
感谢同事[天锦]的投稿.投稿请联系 tengfei@ifeve.com 上篇文章Java8初体验(一)lambda表达式语法比 较详细的介绍了lambda表达式的方方面面,细心的读者会发现那篇文章的例子中有很多Stream的例子.这些Stream的例子可能让你产生疑惑,本 文将会详细讲解Stream的使用方法(不会涉及Stream的原理,因为这个系列的文章还是一个快速学习如何使用的). 1. Stream初体验 我们先来看看Java里面是怎么定义Stream的: A sequence of el
1. Stream初体验 我们先来看看Java里面是怎么定义Stream的: A sequence of elements supporting sequential and parallel aggregate operations. 我们来解读一下上面的那句话: Stream是元素的集合,这点让Stream看起来用些类似Iterator: 可以支持顺序和并行的对原Stream进行汇聚的操作: 大家可以把Stream当成一个高级版本的Iterator.原始版本的Iterator,用户只能一个一
从Node.js API文档中可知, 'A stream is an abstract interface implemented by various objects in Node. For example a request to an HTTP server is a stream, as is stdout. Streams are readable, writable, or both. All streams are instances of EventEmitter.''流是很多