My code is not passing test case please take a look my code is given below

#1
#2 
1.Take two variables one for storing local max sum(max-ending-here) and global max sum(max-so-far).
2.Iterate over each each element of the array say a.

  2.1 max_ending_here = max_ending_here + a[i]
  2.2 if(max_ending_here < 0)   
        max_ending_here = 0
  2.3 if(max_so_far < max_ending_here)
        max_so_far = max_ending_here

3.max-so-far is the required max sum of contiguous subarray.