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  1. int longestZigZag( vector <int> sequence ) 
  2. {
  3. 	int n = sequence.size();
  4. 	vector <int> dp (n, 1);
  5. 	vector <int> dif (n, 0);
  6. 	int temp;
  7. 	for (int i = 1; i < n; i++)
  8. 		for (int j = 0; j < i; j++)
  9. 		{
  10. 			temp = sequence[i] - sequence[j];
  11. 			if (temp != 0 && temp*dif[j] <= 0 && dp[j] + 1 > dp[i])
  12. 			{				   
  13. 				dp[i] = dp[j] + 1;
  14. 				dif[i] = temp;
  15. 			}
  16. 		}
  17. 	sort (dp.begin(), dp.end());
  18. 	return dp[n-1];
  19. }
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https://ideone.com/YGa5h
language:
C++ (gcc 8.3)
created:
12 years ago
visibility:
public

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