浙大PAT试题 1003 我要通过!

牛客网20分通过,PAT平台18分,有一个测试点未通过,不知错误点,有待改进!

import java.util.Scanner;
 
public class Main {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int n = scan.nextInt();
        String str[] = new String[n];
        for (int i = 0; i < n; i++) {
            str[i] = scan.next();
        }
        for (int i = 0; i < n; i++) {
            System.out.println(judgeStr(str[i]));
        }
    }
 
    public static String judgeStr(String str) {
        int Pflag = 0, Tflag = 0, Afirst = 0, Alast = 0, Amid = 0;
        char[] s = str.toCharArray();
        for (int i = 0; i < s.length; i++) {
            if (s[i] != 'P' && s[i] != 'A' && s[i] != 'T') {
                break;
            }
            if (s[i] == 'P') {
                Pflag = 1;
            }
            if (s[i] == 'T') {
                Tflag = 1;
            }
            if (s[i] == 'A' && Pflag == 0) {
                Afirst++;
            } else if (s[i] == 'A' && Tflag == 1) {
                Alast++;
            } else if (s[i] == 'A' && Pflag == 1 && Tflag == 0) {
                Amid++;
            }
        }
        if (Amid != 0 && Pflag == 1 && Tflag == 1 && Afirst * Amid == Alast) {
            return "YES";
        } else {
            return "NO";
        }
    }
}