Cruise
https://www.jianshu.com/p/5af803941111
https://my.oschina.net/iyinghui/blog/1923083
https://www.jianshu.com/p/6d6e629df051
http://www.cs.usfca.edu/~galles/visualization/Algorithms.html
java中的移位运算符：<<,>>,>>>总结
>>> (无符号右移)的优先级高于^ （按位异或）
