题解 | #数字颠倒#

package main

import (
	"fmt"
)

func main() {
	var s int
	fmt.Scan(&s)
	if s == 0 {
		fmt.Println(s)
		return
	}
	for s != 0 {
		fmt.Print(s % 10)
		s /= 10
	}
}