func reverse(s string) string {
var rev string
for i:=len(s)-1; i>=0; i-- {
rev += string(s[i])
}
return rev
}
func finalString(s string) string {
var typed string
for _, c := range s {
if c == 'i' {
typed = reverse(typed)
} else {
typed += string(c)
}
}
return typed
}