Reverse string in Go

reverse.go

func reverse(lst []string) chan string {
	ret := make(chan string)
	go func() {
		for i, _ := range lst {
			ret <- lst[len(lst)-1-i]
		}
		close(ret)
	}()
	return ret
}

func reverse(lst []interface{}, callback func(x interface{})) {
	for i := len(lst)-1; i >= 0; i-- {
		callback(lst[i])
	}
}

func reverse(lst []string) {
	for i := 0; i < len(lst)/2; i++ {
		j := len(lst) - i - 1
		lst[i], lst[j] = lst[j], lst[i]
	}
}