go语言的排序:golang
http://www.javashuo.com/article/p-abtxdlev-t.html.net
go语言去重:blog
https://blog.csdn.net/qq_27068845/article/details/77407358排序
经过构造set去重(go中没有set):get
https://studygolang.com/articles/3291qq