MATLAB: How to create 2 different matrices from 1 matrix

Question

I have a database 749×5 size. What I want is:

I created a matrix from this dataset. I called it matrix. Then, the last column of my matrix is class. I have two classes. If last column is zero, then this row belongs to c0 (class 0), and if the last column is 1 then this row belong to c1 (class 1). I wrote a code. In the c0 there is no problem but in c1, there is zeros then appears its real values. But I do not want the zeros. Can you help me, please?

mSize = 5, atributeNums=4 in my database.

Here is my code:

mSize = size(matrix,2);
c0= zeros();
c1= zeros();
k = 1;
for i=1:size(matrix,1) - 1
    for j=1:attributesNum
        if matrix(i,mSize)== 0
          c0(i,j)= matrix(i,j);   
        end
        for a=1:attributesNum
            if matrix(i,mSize)~= 0
                   c1(i,k)= matrix(i,j);
                    k = k+1;
            end
        end
           
    end
end

c1 expected matrix:

2           6        1500          47
       
4           2         500           9
       
2           2         500          11
                  
...
21           2         500          52
       
23           3         750          62
       
39           1         250          39

c1 output

 0           0          0            0
       
0           0          0            0
       
0           0          0            0
                     
....
2           6        1500          47
       
4           2         500           9
       
2           2         500          11
                  
...
21           2         500          52
       
23           3         750          62
       
39           1         250          39

Answer 1

mask = matrix(:,end) == 0;
c0 = matrix(mask,:);
c1 = matrix(~mask,:);

No loops needed.