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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. 	static int max=100000;
  11. 	static boolean sieve[]=new boolean[max+1];
  12. static 	void createsieve()
  13. 	{
  14. 		Arrays.fill(sieve,true);
  15. 		sieve[1]=false;
  16. 		sieve[0]=false;
  17.  
  18. 		for(int i=2;i<=Math.sqrt(max);i++)
  19. 		{
  20. 			if(sieve[i])
  21. 			{
  22. 				for(int j=i*i;j<=max;j+=i)
  23. 				sieve[j]=false;
  24. 			}
  25. 		}
  26. 	}
  27.  
  28. 	public static void main (String[] args) throws java.lang.Exception
  29. 	{
  30. 		// your code goes here
  31. 		createsieve();
  32. 		Scanner sc=new Scanner(System.in);
  33. 		int n=sc.nextInt();
  34. 		List<Integer> li=new ArrayList<>();
  35. 		for(int i=1;i<=n;i++)
  36. 		{
  37. 			if(sieve[i])
  38. 			li.add(i);
  39. 		}
  40.  
  41. 		System.out.println(li);
  42.  
  43. 	}
  44. }
Success #stdin #stdout 0.16s 57040KB
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https://ideone.com/qju1vH
language:
Java (HotSpot 12)
created:
5 hours ago
visibility:
public

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