题解 | 数字颠倒
数字颠倒
https://www.nowcoder.com/practice/ae809795fca34687a48b172186e3dafe
import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int n = sc.nextInt(); String s = Integer.toString(n); for(int i = s.length()-1;i>=0;i--){ System.out.print(s.charAt(i)); } } }
利用Integer的toString 函数去将整数转换成字符串