Chapter 7, Problem 28P

Write a user-defined function that sorts the elements of a matrix. For the function name and arguments, use B= matrixsort (A), where A is any size (m×n) matrix and B is a matrix of the same size with the elements of A rearranged in descending order column alter column with the (1,1) element the largest and the (m,n) element the smallest. If available, use the user- defined function downsort from the previous problem as a subfunction

within matrixsort.

Test your function on a 4×7 matrix with elements (integers) randomly distributed between -30 and 30. Use MATLAB’s randi function to generate the initial matrix.