Problem 1678. Count consecutive 0's in between values of 1

How about adding a test case in which vector x starts with a 1, such as x = [1 0 0 1 0] ? (Several of the submitted/approved solutions would give the answer as y = [0 2 1] instead of y = [2 1] . )

The starting or the trailing zeros in the array shouldn't be counted.

I think your first test case is wrong: when x = [1], then there are no pairs of consecutive ones, and the proper answer is y = [] rather than y = [0]. In contrast, y = [0] is correct when x = [1 1], where there are two ones that have no zeros in between.