Java Problem

Java Problem

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January 14, 2009 at 3:41 AM

Hi friend,

Code to solve the problem :

import java.io.*;
public class PrimeNumber
{

public static boolean isPrime ( int num )
{
boolean prime = true;
int limit = (int) Math.sqrt ( num );

for ( int i = 2; i <= limit; i++ )
{
if ( num % i == 0 )
{
prime = false;
break;
}
}

return prime;
}

public static void main ( String[] args ) throws IOException
{
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
System.out.println("Enter enter the number");
String strNum = br.readLine();
int num = Integer.parseInt(strNum);

int[] numAr = new int[num];
int e_num =1;
for(int i=0;i<num;i++)
{
System.out.println("Enter enter "+e_num+" number");
String strNumar = br.readLine();
numAr[i] = Integer.parseInt(strNumar);
e_num++;

}

int count=1;
for(int i=0;i<numAr.length;i++)
{

if(isPrime(numAr[i]))
{
System.out.println(numAr[i]+" is prime.");
System.out.println("It is at "+count+"th position in the prime series.");
System.out.println(" ");
count++;

}
}

}
}

For read more information on java visit to :

http://www.roseindia.net/java/

Thanks









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