Create a Matrix - Replace elements of a Matrix

I want to create a row of a matrix which consist of 16 zeros and random replace 4 of the first 8 elements with ones and 2 of the last 8 elements with ones.

i.e A = [ 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ;]

Then B= [ 1 0 0 1 1 0 0 1 0 0 1 0 0 1 0 0 ; ]

The ones should be replaced randomly in their positions as explained before.

Any help could be useful.

Thanks in advance !

Answer 1

[Azzi Abdelmalek]

A = [ 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ]
B=A
B([randperm(8,4) randperm(8,2)+8])=1

[Konstantinos]

Thanks for your help!

[Azzi Abdelmalek]

You can write

A=zeros(1,16)

instead of

A = [ 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ]

[Konstantinos]

Indeed...my problem was that I didn't know the existance of "randperm" command.