java programming

6. int countRuns(intl arr, int start, int end) that counts how many runs (maximal consecutive blocks of equal elements) there are in the subarray example, the array [4, 4, 4, -2, 0,-8,-8, 3, 3, 3] has five runs, whereas the arrays [5, 5, 5, 5] and [42] each have only one run. An empty subarray (that is, when start > end) has zero runs. (Hint: count how many elements are different from the next element.)