Please enter sequence integers: 

Algorithm 1: 1405

Algorithm 2: 1405

Algorithm 3: 1405

Algorithm 4: 1405

Final Results
  Algorithm 1 O(n^3)   : 4321416 ms
  Algorithm 2 O(n^2)   : 5078 ms
  Algorithm 3 O(n lg n): 126 ms
  Algorithm 4 O(n)     : 4 ms