In an array, a "run" occurs when 2 or more consecutive elements have the same sign (positive, negative, or zero). For example, in the array {2, -3, -19, -8, -2, 5, 25, 0}, there is a run of 4 negative numbers, and a run of 2 positive numbers. The "length" of the run of negatives is 4 (because there are 4 negatives in a row), and the length of the run of positives is 2. Write a method that returns the length of the longest run. If no run occurs, return 0. Note that a run of 1 is not possible. Math.signum() can be useful for determining the sign of a number. Math.signum(num) returns -1.0 if num is negative, 0.0 if num is 0, and 1.0 if num is positive. This can be a quick way to determine whether two numbers have the same sign.