Tracks
/
Ruby
Ruby
/
Exercises
/
Largest Series Product
Largest Series Product

Largest Series Product

Easy

Instructions

Given a string of digits, calculate the largest product for a contiguous substring of digits of length n.

For example, for the input '1027839564', the largest product for a series of 3 digits is 270 (9 * 5 * 6), and the largest product for a series of 5 digits is 7560 (7 * 8 * 3 * 9 * 5).

Note that these series are only required to occupy adjacent positions in the input; the digits need not be numerically consecutive.

For the input '73167176531330624919225119674426574742355349194934', the largest product for a series of 6 digits is 23520.

Last updated 17 September 2021
Edit via GitHub The link opens in a new window or tab
Ruby Exercism

Ready to start Largest Series Product?

Sign up to Exercism to learn and master Ruby with 16 concepts, 109 exercises, and real human mentoring, all for free.