救命....

比方说
A要15个随机产生的0跟1
但我不知道下一个人要几个随机的0跟1
这种的要怎麼写?

x=[ 1 0 0 1 1 0 1]; % Binary Information
bp=.000001; % bit period
disp(' Binary information at Trans mitter :');
disp(x);
%XX representation of transmitting binary information as digital signal XXX
bit=[];
for n=1:1:length(x)
if x(n)==1;
se=ones(1,100);
else x(n)==0;
se=zeros(1,100);
end
bit=[bit se];
end
t1=bp/100:bp/100:100*length(x)*(bp/100);
plot(t1,bit,'lineWidth',2.5);grid on;
axis([ 0 bp*length(x) -.5 1.5]);
我现在只会固定的....