蓝桥杯试题 基础练习 BASIC-9 特殊回文数——冲刺蓝桥杯第五天

import java.util.ArrayList;
import java.util.Scanner;

public class SpecialPalindrome {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        sc.close();
        ArrayList<Integer> arrayList5 = new ArrayList<>(); //存放五位十进制数
        ArrayList<Integer> arrayList6 = new ArrayList<>(); //存放六位十进制数
        for (int i = 0; i < 10; i++) {
            for (int j = 0; j < 10; j++) {
                for (int k = 0; k < 10; k++) {
                    for (int p = 0; p < 10; p++) {
                        for (int m = 0; m < 10; m++) {
                            int a = i * 10000 + j * 1000 + k * 100 + p * 10 + m;
                            int b = m * 10000 + p * 1000 + k * 100 + j * 10 + i;
                            int c = i + j + k + p + m;
                            if (a == b && c == n && a >= 10000) {
                                arrayList5.add(a);
                            }
                            for (int l = 0; l < 10; l++) {
                                a = i * 100000 + j * 10000 + k * 1000 + p * 100 + m * 10 + l;
                                b = l * 100000 + m * 10000 + p * 1000 + k * 100 + j * 10 + i;
                                c = i + j + k + p + m + l;
                                if (a == b && c == n&&a >= 100000) {
                                    arrayList6.add(a);
                                }
                            }
                        }
                    }
                }
            }
        }
        for (int i : arrayList5) {
            System.out.println(i);
        }
        for (int i : arrayList6) {
            System.out.println(i);
        }
    }
}