Please enter sequence integers: 

Algorithm 1: 1405

Algorithm 2: 1405

Algorithm 3: 1405

Algorithm 4: 1405

Final Results
  Algorithm 1 O(n^3)   : 282453 ms
  Algorithm 2 O(n^2)   : 813 ms
  Algorithm 3 O(n lg n): 50 ms
  Algorithm 4 O(n)     : 2 ms