fix sort is number

liuxiaolong

2020-07-13 e80c3299f3216739b69bb3b5562eb25d9689951f

 .gitignore

@@ -2,6 +2,8 @@
*.o
*.a
*.so
.idea
.vscode

# Folders
_obj
@@ -21,3 +23,4 @@

*.exe
*.test