How can I filter values >120 and <120

I want filter values in a matrix (A) where average value is 120, and I want convert values <120 in zeros and values >120 in ones. I write this code ... if true

    A=[53 9 36 161 164 50;
  149 60 162 173 51 3;
  194 179 166 90 8 0;
  192 196 150 46 7 0;
  189 192 189 158 71 17;
  183 182 192 190 179 137];

[m n]= size(A); for i=1:m; for j=1:n if(m>=120) B=zeros(m,n); else B=ones(m,n) end end end

end

Answer 1

[Azzi Abdelmalek]

A(A<120)=0;
A(A>120)=1