Write a program that will take a string of digits and give you all the possible consecutive number series of length n in that string.
For example, the string "01234" has the following 3-digit series:
- 012
- 123
- 234
And the following 4-digit series:
- 0123
- 1234
And if you ask for a 6-digit series from a 5-digit string, you deserve whatever you get.
A subset of the Problem 8 at Project Euler view source