MATLAB: How can remove the rows and columns which has ones in all

Question

if the input array A i want B is the output

A=[1 1 1 1; 1 0 1 1;1 0 0 1]

A =

1 1 1 1

1 0 1 1

1 0 0 1

B =

0 1

0 0

thanks

Answer 1

use all() for columns and rows separately , make a copy of A to B and finally remove the unwanted