MATLAB: Add column vector with for loops

Question

I have two (4×1) column vector: ones and zeros;

I'm trying to create a matrix where every column is something like

column1 = [ones; zeros; zeros; zeros]

column2 = [zeros; ones; zeros; zeros]

column3 = [zeros; zeros; ones; zeros]

column4 = [zeros; zeros; zeros; ones]

but using a for loops.

Thanks in advance

Answer 1

See eye() function

x = repelem(eye(4),4,1);

Result

x =
     1     0     0     0
     1     0     0     0
     1     0     0     0
     1     0     0     0
     0     1     0     0
     0     1     0     0
     0     1     0     0
     0     1     0     0
     0     0     1     0
     0     0     1     0
     0     0     1     0
     0     0     1     0
     0     0     0     1
     0     0     0     1
     0     0     0     1
     0     0     0     1