Android链接

进程间通信：
https://www.cnblogs.com/pear-lemon/p/6547734.html

加密解密：
https://blog.csdn.net/u013320868/article/details/54090295
http://www.ruanyifeng.com/blog/2011/08/what_is_a_digital_signature.html（图解易懂）

https原理：
https://www.jianshu.com/p/650ad90bf563
https://zhuanlan.zhihu.com/p/26682342
https://blog.csdn.net/clh604/article/details/22179907

HashMap:
https://blog.csdn.net/CSDN_Terence/article/details/77711687
https://blog.csdn.net/qq_27093465/article/details/52209814

生成者消费者：
https://juejin.im/entry/596343686fb9a06bbd6f888c

爬虫：
https://www.imooc.com/article/34226

线程安全：
https://blog.csdn.net/jinggod/article/details/78275763
https://www.cnblogs.com/lwbqqyumidi/p/3837629.html#4054476

数据结构：
https://www.cnblogs.com/ysocean/p/8032642.html