How to write the code of this problem in MATLAB?

I 1. Write a function called intquad that takes as its input arguments two scalar positive integers named n and m in that order. The function returns l, a 2n-by-2m matrix. Q consists of four n-by-m submatrices. The elements of the submatrix in the top left corner are all Os, the elements of the submatrix at the top right are 1s, the elements in the bottom left are 2s, and the elements in the bottom right are 3s. (50 pts) Test your code for the following inputs: (n,m)