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Monday, 29 April 2013

Find Prime Number upto N ...


package com.alok;
import java.io.*;

class Prime_check
{
  public static void main(String[] args) throws Exception
  {
 BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
 System.out.println("Enter Limit:");
 int num = Integer.parseInt(br.readLine());
 System.out.println("Prime numbers: ");
 for (int i=1; i < num; i++ )
 {
 int j;
 for (j=2; j<i; j++)
 {
 int n = i%j;
  if (n==0)
  {
 break;
  }
 }
  if(i == j)
  {
  System.out.print("  "+i);
  }
  }
  }
}

O/P:-


Enter Limit:
50
Prime numbers:
  2  3  5  7  11  13  17  19  23  29  31  37  41  43  47

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