system.time(mean(replicate(1e4,any(diff(cumsum(rbinom(100,1,0.5)),5)==5))))
user system elapsed
1.820 0.000 1.886
>
> system.time(mean(replicate(1e4,with(rle(rbinom(100,1,0.5)), max(lengths[wh
<e(1e4,with(rle(rbinom(100,1,0.5)), max(lengths[whi ch(values==1)])>=5))))
user system elapsed
4.370 0.010 4.478
