how to write the methods for this array?

Given an array of numbers, a subvector is any sequence of consecutive elements. The maximum subvector is the subvector having the highest sum of values. For example, consider the following array: The maximum subvector consists of the elements {6, 5,-10, 11, 20}, which sum to 32. Give a method maxSubvector (vec), whose parameter vec is an array of type int, and which returns the maximum subvector sum. (In the example above this would be 32.)