how can remove the rows and columns which has ones in all

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

[madhan ravi]

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

[Ali Ali]

I tried but could not find the result

If you have the code, I hope you send it

[madhan ravi]

B = A;
r = all(A,2);
c = all(A,1);
B(r,:) = [];
B(:,c) = []

[Ali Ali]

thank you

Answer 2

[Andrei Bobrov]

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

AA = ~A;
B = A(any(AA,2),any(AA));