PIO11 题解 | 多组_字符串_T组形式

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 sc = new Scanner(System.in);
        int t = sc.nextInt();
        sc.nextLine();
        String [] arr = new String[t];

        int i = 0;
        while(i < t){
            int n = sc.nextInt();
            sc.nextLine(); // 读取换行符
            String s = sc.nextLine(); // 读取字符串s
            if(s.length() == n){
                String reversed = reverse(s);
                arr[i] = reversed;
            }else{
                break;
            }
            i++;
        }
        for (int k = 0; k < t; k++){
            System.out.println(arr[k]);
        }
        sc.close();
    }
    private static String reverse(String s) {
        StringBuilder sb = new StringBuilder(s);
        return sb.reverse().toString();
    }
}