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  1. import java.util.*;
  2. import java.lang.*;
  3.  
  4. class Main
  5. {
  6.     public static int largestTriangleNumberSmallerThan(int x) {
  7.         int i = 0;
  8.         int last = 0;
  9.         while (true) {
  10.             int triangle = i*(i+1)/2;
  11.             if (triangle > x) return last;
  12.             last = triangle;
  13.             i++;
  14.         }
  15.     }
  16.  
  17. 	public static void main (String[] args) throws java.lang.Exception
  18. 	{
  19. 		System.out.println(largestTriangleNumberSmallerThan(65));
  20. 	}
  21. }
Success #stdin #stdout 0.06s 380224KB
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https://ideone.com/vzQEBz
language:
Java (HotSpot 12)
created:
11 years ago
visibility:
public

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