java代码

c++语法还不太熟悉，就用Java随便写写把。。。

import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        int B;
        Scanner scanner = new Scanner(System.in);
        B = scanner.nextInt();
        for (int i = 1; i <= 300; i++) {
            int num = i * i;
            String s = convert(num, B);
            boolean res = judge(s);
            if (res) {
                System.out.println(convert(i, B) + ' ' + s);
            }
        }
    }
    public static boolean judge(String s) {
        String temp = new StringBuilder(s).reverse().toString();
        if (temp.equals(s)) {
            return true;
        }
        return false;
    }

    public static String convert(int num, int B) {
        char[] map = {'0','1','2','3','4','5',
                '6','7','8','9','A',
                'B','C','D','E','F',
                'G','H','I','J'};
        String ans = "";
        while (num > 0) {
            ans += map[num % B];
            num /= B;
        }
        return new StringBuilder(ans).reverse().toString();
    }
}