题解 | #数字颠倒#
数字颠倒
https://www.nowcoder.com/practice/ae809795fca34687a48b172186e3dafe
import java.util.Scanner;
// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
if (!in.hasNext()) {
return;
}
String input = in.next();
if (input == null || input.length() == 0) {
return;
}
for (int i = input.length() -1; i>=0; i--) {
System.out.print(input.charAt(i));
}
}
}
