Write a method named multiply that returns a string representation of a two-dimensional array of int. The first and second parameters are Strings that represent rectangular two dimensional arrays of ints, representing matrices. Convert them to two dimensional arrays with method toArray(). The resultant array should be the matrix product. Refer to a math text for how to multiply matrices. Build the array in this method, then use toString() to return the array as a string. You must cut and paste methods toString() and toArray() from the Hint.