Talk:Range expansion

Negative ranges

Should the test case contain a negative range, such as -15--10? Stormneedle 18:57, 16 July 2010 (UTC)

It was carefully chosen to have a negative number as I found it complicated the Python solution I was working on. Self flagellationarily yours, --Paddy3118 19:17, 16 July 2010 (UTC)

I think he was asking if the test case should be extended to include a range where the terminating number is negative. For example, perhaps -3--1 instead of -3-1? --Rdm 19:21, 16 July 2010 (UTC)

Yes, I was, Rdm. Sorry that I was unclear. Stormneedle 21:35, 16 July 2010 (UTC)

Ahh. I understand now. Yes. I'll make the change within the hour, but it will invalidate all current entries. (How do you flag all entries for update due to a change in the task? --Paddy3118 04:59, 17 July 2010 (UTC)

Spaces in the list

The examples are all without spaces in the list, e.g. "1, 3-6". I guess this means that solutions which don't allow for spaces are correct, right? What about the converse: Would an example which does allow for spaces be incorrect? In other words: Is accepting spaces mandatory, optional or forbidden?

BTW, my C++ code accepts whitespace between numbers and commas/range dashes as well as at the beginning and end (the latter is especially handy for reading directly from standard input, because with normal usage there's always a line feed at the end) --Ce 09:12, 17 July 2010 (UTC)