Construct this matrix based on two vectors MATLAB

Question

I do have 2 vectors and i want to construct a matrix based onr and c

r =

 1
 2
 4
 6
 8

c =

 2
 4
 6
 8
10
         


        

Answer 1

You could use the constructor for sparse matrices:

full(sparse(r,c,1))

by the way, if you want to apply this to large matrices with many zeros, stay with the sparse one. It uses much less memory for matrices with many zeros:

sparse(r,c,1)