// Code to find as much Prime numbers within ten minutes import java.util.Vector; public class PrimeIn10Minutes { public static void main(String[] args) { boolean flag = false; long startTime; startTime = System.currentTimeMillis(); Vector vector = new Vector(); long num = 2; while((System.currentTimeMillis() - startTime) <= 600000) { flag = checkNextPrime(num); if (!flag) { vector.add(num); } num++; } int vectorSize = vector.size(); System.out.println("Last three prime numbers till ten minutes are :"); for(int i = vectorSize-1; i > vectorSize-4; i--) { System.out.println(vector.get(i)); } } public static boolean checkNextPrime(long num) { boolean flag = false; if(num/2 < 2) return false; else { for(long i = 2; i <= num/2; i++) { if(num % i == 0) { flag = true; break; } } return flag; } } }
Output:
Last three prime numbers till ten minutes are :
1074253
1074251
1074223
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