I've received a few downvotes on the original post, so I think I should step in here and clarify that this is not a homework problem. :-) It's actual work-related stuff.

I know that it can be done using a for() loop (thanks, though), but it seems like there ought to be a way to do it using just a regex. (Whoops! I didn't specify that in the problem. Doh! Okay, bad problem spec on my part.)

I'm thinking I could just specify "\n" 7 times in the regex, but the "0" has to be at the start of the line. In other words, it must follow a "\n" -- unless it is at the start of the file. That part has me stumped. I guess I could prepend a "\n" onto the start of the file, then remove it after I'm done, but that feels ... icky.

Wally Hartshorn

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