How do I output my data as a list?

I have a matrix and I am told to split my one column matrix into two equal matrics; For example if D=[1 5 2 4] then my output would be A11=[1 5] A12=[2 4]. I have coded the following function below my issue is my last A12 matrix =[0 0 2 4] instead of just [2 4]. How do I fix this? thanks

[A11,A12,]=SplitMatrix( D )
[r c]=size(D);
if r==1 && Mod(c,2)==0
for i=1:r
  for j=1:c/2
      A11(j)=D(i,j)
  end
  for j=((c/2+1):c)
    A12(j)=D(i,j)
  end
end

Answer 1

[Azzi Abdelmalek]

A11=D(1:2)
A12=D(2+1:end)

[Toni Addison]

Thanks for responding, what if I have more than 4 columns lets say 10. I am trying to write the function to accept any size. How do I make it general for length of columns?

[Azzi Abdelmalek]

n=numel(D)
m=ceil(n/2)
A11=D(1:m)
A12=D(m+1:end)