48 lines
1.4 KiB
Java
48 lines
1.4 KiB
Java
package Misc;
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import java.util.Scanner;
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public class PalindromePrime {
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public static void main(String[] args) { // Main funtion
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Scanner in = new Scanner(System.in);
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System.out.println("Enter the quantity of First Palindromic Primes you want");
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int n = in.nextInt(); // Input of how many first pallindromic prime we want
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functioning(n); // calling function - functioning
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in.close();
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}
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public static boolean prime(int num) { // checking if number is prime or not
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for (int divisor = 3; divisor <= Math.sqrt(num); divisor += 2) {
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if (num % divisor == 0) {
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return false; // false if not prime
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}
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}
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return true; // True if prime
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}
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public static int reverse(int n) { // Returns the reverse of the number
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int reverse = 0;
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while (n != 0) {
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reverse *= 10;
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reverse += n % 10;
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n /= 10;
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}
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return reverse;
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}
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public static void functioning(int y) {
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if (y == 0) return;
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System.out.print(2 + "\n"); // print the first Palindromic Prime
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int count = 1;
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int num = 3;
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while (count < y) {
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if (num == reverse(num) && prime(num)) { // number is prime and it's reverse is same
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count++; // counts check when to terminate while loop
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System.out.print(num + "\n"); // print the Palindromic Prime
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}
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num += 2; // inrease iterator value by two
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}
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}
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}
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