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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10. 	public static void main (String[] args) throws java.lang.Exception
  11. 	{
  12. 		// your code goes here
  13. 		findPrimes(25);
  14. 	}
  15.  
  16. 	static void findPrimes(int limit) {
  17.  
  18.         // Special handling for 2
  19.         if (limit > 2)
  20.             System.out.print("2,");
  21.  
  22.         // Loop from the first Prime till limit
  23.         for (int i = 2; i < limit; i++) {
  24.             // Assume number to be prime
  25.             boolean isPrime = true;
  26.  
  27.             if (i % 2 == 0)
  28.                 isPrime = false;
  29.             else {
  30.  
  31.                 // Loop from 3 to number/2
  32.                 for (int j = 3; j < i / 2; j += 2) {
  33.  
  34.                     // If the number divides, it means the number is not prime
  35.                     if (i % j == 0) {
  36.                         isPrime = false;
  37.                         break;
  38.                     }
  39.                 }
  40.             }
  41.  
  42.             // Print the number if it is prime
  43.             if (isPrime)
  44.                 System.out.print(i + ",");
  45.         }
  46.     }
  47. }
Success #stdin #stdout 0.09s 320320KB
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Standard input is empty
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2,3,5,7,11,13,17,19,23,
https://ideone.com/BGr3b0
language:
Java (HotSpot 12)
created:
9 years ago
visibility:
secret

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