华为OJ 初级：字符逆序

/*字符逆序：直接调用StringBuilder中的reverse()方法，将字符串反转*/
import java.util.Scanner;

public class Main{
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
StringBuilder input = new StringBuilder(scanner.nextLine()); //将输入的String字符串转换为StringBuilder
StringBuilder output = new StringBuilder();
if (input.length() <= 100)
output = input.reverse();
System.out.print(output);
scanner.close();
}
}