A website domain like “discuss.leetcode.com” consists of various subdomains. At the top level, we have “com”, at the next level, we have “leetcode.com”, and at the lowest level, “discuss.leetcode.c…

Given a list of words and two words word1 and word2, return the shortest distance between these two words in the list.

Design a class which receives a list of words in the constructor, and implements a method that takes two words word1 and word2 and return the shortest distance between these two words in the list. …

本文简介 WeakHashMap类概览 WeakHashMap类构造器总结 WeakHashMap类构造方法 WeakHasjMap类使用举例 1. WeakHashMap类概览 WeakHashMap是一个实现了Map接口，并且键为weak型的哈希表。WeakHashMap中的条目不再被…

背景 上午刚到公司，准备开始一天的摸鱼之旅时突然收到了一封监控中心的邮件。 心中暗道不好，因为监控系统从来不会告诉我应用完美无 bug，其实系统挺猥琐。 打开邮件一看，果然告知我有一个应用的线程池队列达到…