public class HuiWenSuShu {

public static void main(String[] args) { printRP(100);

} public static void printRP(int numberOfRP){ final int Num = 10; int count = 0; int number = 2; while(count<numberOfRP){ if(isRP(number)&&isPR(number)){ count++; if(count % Num == 0){ System.out.printf("%-7d\n",number); } else System.out.printf("%-7d", number); } number++; } } public static boolean isRP(int number){ for(int i = 2;i <= number / 2; i++){ if(number % i == 0){ return false; } } return true; }//判斷是否是素數 public static boolean isPR(int number){ int a=number,b = 0; while(number != 0){ b=b*10+number%10; number=number/10; } return(a == b); }//判斷是否是素數 }