Sorting by first n-digits

[Gioyer07]

An index with 20k codes has to be sorted differently, considering only the first 7 (in my cae) digits.

Codes has variable number of digits from 7 to 12 or more. I just need to have an ordered list that ignores anything above the 7th digit.

Thanks for help

[Glenn 8675309]

By far, this is the best "has nothing to do with photoshop elements" question I've ever seen, and reeks of a college freshman math assignment. 

You can solve this with about 18 lines of code in C++.

[Gioyer07]

Gosh sorry... I just faild 'cause of different opened windows: I thought I was on Indesign's Comunity forum.

[Greg_S.]

I'll move your post to the correct forum, in case you haven't posted there already.

Added:  Never mind.  I see that the post has already been made.  I will lock this thread.