Write in MatLab a function sort3(v). The function must have an in parameter, a row or column vector v of real numbers. If the number of elements in v is a multiple of 3, then the function should work on groups of three consecutive numbers in v, then the groups (v1, v2, v3), (v4, v5, v6),. . . . The output parameter, which should be the same size as the input parameter, should contain the sorted groups of numbers, so that each triple should be sorted in ascending order. If the number of elements in v is not a multiple of three, the function must return an empty one vector.