[Bioperl-l] split-like function

[Keith Boroevich]

hi,
i'm attempting to split up large sequence files (some currently being
sequenced) at any position where more then 50 N's occur in a row.  This is
not the problem ( split(/n{50,}/i) ) but trouble arises when i want to know
where all the positions of the splits.  I was wondering if there was any
bioperl function that might address this or am overlooking an easy perl
function?
thanks in advance

keith