A=rand(10,1)>0.5 %give you an array of ones and zeros 
maxstrkln=0;
winstrkln=0;
for ii=1:10
    if A(ii)==1
        winstrkln=winstrkln+1;
    else
        if maxstrkln < winstrkln
            maxstrkln=winstrkln;
        end
        winstrkln=0;
    end
end
 if maxstrkln < winstrkln
            maxstrkln=winstrkln;
 end
 maxstrkln