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  1.  
  2. # python3 code .
  3. def seq(arr):
  4. 	if len(arr) <= 2:
  5. 		return len(arr)
  6. 	else :
  7. 		ans = 2;
  8. 		tmp_ans = 2;
  9. 		for i in range(2 , len(arr)):
  10. 			if arr[i]==arr[i-2]:
  11. 				tmp_ans = tmp_ans + 1
  12. 			else :
  13. 				tmp_ans = 2
  14.  
  15. 			ans = max(ans , tmp_ans)
  16. 		return ans
  17.  
  18.  
  19. l = [7 , -5 , -5 , -5 , 7 , -1 , 7];
  20. print(seq(l))
Success #stdin #stdout 0.02s 9180KB
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stdin 
Standard input is empty
stdout 
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https://ideone.com/EfbTK8
language:
Python 3 (python  3.12)
created:
6 years ago
visibility:
public

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