package Maths;
import java.util.ArrayList;
import java.util.Collections;
/**
* n number theory, a vampire number (or true vampire number) is a composite natural number with an
* even number of digits, that can be factored into two natural numbers each with half as many
* digits as the original number and not both with trailing zeroes, where the two factors contain
* precisely all the digits of the original number, in any order, counting multiplicity. The first
* vampire number is 1260 = 21 60. *
*
* * link: https://en.wikipedia.org/wiki/Vampire_number *
*
*
*/
public class VampireNumber {
public static void main(String[] args) {
test(10, 1000);
}
static void test(int startValue, int stopValue) {
int countofRes = 1;
StringBuilder res = new StringBuilder();
for (int i = startValue; i