当多个线程访问相同的数据时, 就会出现并发读写问题（reader-writer problems）。线程访问数据有两种访问类型: 读线程 reader: 只进行数据读取 写线程 writer: 进行数据修改

Longest Substring Without Repeating Characters Given a string, find the length of the longest substring without repeating characters.

Add Tow Numbers You are given two non-empty linked lists representing two non-negative integers. The digits are stored in reverse order and each of their nodes contain a single digit. Add the two numbers and return it as a linked list. You may assume the two numbers do not contain any leading zero, except the number 0 itself.

Two Sum Given an array of integers, return indices of the two numbers such that they add up to a specific target. You may assume that each input would have exactly one solution, and you may not use the same element twice.

“Golang是不是支持面向对象”这本身就是一个值得思考的话题，官方文档给出的答案是“Yes and no”

Kubernetes集群Kubernetes是一个完备的分布式系统支撑平台，具有完备的集群管理能力，多扩多层次的安全防护和准入机制、多租户应用支撑能力、透明的服务注册和发现机制、內建智能负载均衡器、强大的故障发现和自我修复能力、服务滚动升级和在线扩容能力、可扩展的资源自动调度机制以及多粒度的资源配额管理能力。同时Kubernetes提供完善的管理工具，涵盖了包括开发、部署测试、运维监控在内的各个环节。