How do I find the maximum value produced in a loop?

Okay so I want to find the maximum value of s found in the following loop:

for k=1:N;
    x = sign(rand-0.5);
    if x==1 
        s = s+1; 
    elseif x==-1 
        disp(s)
        s=0; 
    end
end

Obviously it keeps resetting to 0 and then building back up again, but I want to be able to find the maximum value of s found throughout the loop, without displaying all values of s and searching for the maximum (I'll have to make N very big later!). Can anyone help please? Thank you!

Answer 1

[Torsten]

max_s = -1;
for k=1:N;
    x = sign(rand-0.5);
    if x==1 
        s = s+1; 
    elseif x==-1 
        disp(s)
        s=0; 
    end
    max_s = max(max_s,s);
end
max_s

[Lauren Branney]

That's brilliant, thank you so much!