haibbo
diff --git a/‎3-array_reverse/main.go‎ ‎gopl/ch4/3-array_reverse/main.go‎3-array_reverse/main.go renamed to gopl/ch4/3-array_reverse/main.go b/‎3-array_reverse/main.go‎ ‎gopl/ch4/3-array_reverse/main.go‎3-array_reverse/main.go renamed to gopl/ch4/3-array_reverse/main.go
diff --git a/‎4-rotate/main.go‎ ‎gopl/ch4/4-rotate/main.go‎4-rotate/main.go renamed to gopl/ch4/4-rotate/main.go b/‎4-rotate/main.go‎ ‎gopl/ch4/4-rotate/main.go‎4-rotate/main.go renamed to gopl/ch4/4-rotate/main.go