Reshape Matrix

Looking for some help on this Matlab question. I don't need a complete solution, just a place to start. Thank you.

Write a functin called reshape_12 that takes a matrix with 12 element(size of matrix can be any thing). The function return a reshaped matrix with size 3 by 4. Do not use built_in function reshape. the number of element in input matrix is always 12 For an example, see the code below: A= [1 2 3 4 5 6 7 8 9 10 11 12]; M = reshape_12(A) M= 1 2 3 4 5 6 7 8 9 10 11 12