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# Largest Series Product

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.

* * * *

For installation and learning resources, refer to the
[exercism help page](http://exercism.io/languages/ruby).

For running the tests provided, you will need the Minitest gem. Open a
terminal window and run the following command to install minitest:

    gem install minitest

If you would like color output, you can `require 'minitest/pride'` in
the test file, or note the alternative instruction, below, for running
the test file.

Run the tests from the exercise directory using the following command:

    ruby largest_series_product_test.rb

To include color from the command line:

    ruby -r minitest/pride largest_series_product_test.rb


## Source

A variation on Problem 8 at Project Euler [http://projecteuler.net/problem=8](http://projecteuler.net/problem=8)

## Submitting Incomplete Solutions
It's possible to submit an incomplete solution so you can see how others have completed the exercise.

Version data entries

79 entries across 79 versions & 1 rubygems

Version Path
trackler-2.2.1.180 tracks/ruby/exercises/largest-series-product/README.md
trackler-2.2.1.179 tracks/ruby/exercises/largest-series-product/README.md
trackler-2.2.1.178 tracks/ruby/exercises/largest-series-product/README.md
trackler-2.2.1.177 tracks/ruby/exercises/largest-series-product/README.md
trackler-2.2.1.176 tracks/ruby/exercises/largest-series-product/README.md
trackler-2.2.1.175 tracks/ruby/exercises/largest-series-product/README.md
trackler-2.2.1.174 tracks/ruby/exercises/largest-series-product/README.md
trackler-2.2.1.173 tracks/ruby/exercises/largest-series-product/README.md
trackler-2.2.1.172 tracks/ruby/exercises/largest-series-product/README.md
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trackler-2.2.1.170 tracks/ruby/exercises/largest-series-product/README.md
trackler-2.2.1.169 tracks/ruby/exercises/largest-series-product/README.md
trackler-2.2.1.167 tracks/ruby/exercises/largest-series-product/README.md
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trackler-2.2.1.160 tracks/ruby/exercises/largest-series-product/README.md