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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.  
  11. 	public static boolean isPrime (int a) {
  12. 		int sr = (int) java.lang.Math.sqrt(a);
  13. 		for (int i = 2; i <= sr; i++) {
  14. 			if (a%i == 0) {
  15. 				return false;
  16. 			}
  17. 		}
  18.  
  19. 		return true;
  20.  
  21. 	}
  22. 	public static void main (String[] args) throws java.lang.Exception
  23. 	{
  24. 		Scanner scan = new Scanner(System.in);
  25. 		int a = scan.nextInt();
  26. 		System.out.println(isPrime(a));
  27. 	}
  28. }
Success #stdin #stdout 0.13s 51452KB
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stdin
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10
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false
https://ideone.com/cySLf3
language:
Java (HotSpot 12)
created:
2 years ago
visibility:
public

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