matlab

Problem Summary Write a function that can calculate the number of crossing in an input vector A crossing occurs when two consecutive numbers in the vector are of different signs. A zero with a positive or negative number does not count for a zero crossing For example Tnput [3.3, -54, 9.11 Outputty since x has 3 crossing (3.-5(4.91.09.-1) 1 Outouti y - 2 ne xhas 2 crossings (3-6) (0-1) Begin your function with Function y rere cross)