/* Prime testing, top-down approach. * Program to print the prime numbers below 100. * * Program written by Carsten Butz * September 2002 */ import tio.*; public class PrimeTopDown { public static void main (String[] args){ for(int i = 1; i <= 100; i++) if(isPrime(i)) System.out.println(i); } /* Method to return true if the number n is * a prime number, false otherwise. */ public static boolean isPrime(int n){ boolean flag = true; int d = 2; if(n==1) flag = false; while(d>=2 && d<=Math.sqrt(n) && flag){ if(n%d==0) flag = false; d++; } return flag; } }