52 lines
1.3 KiB
Markdown
52 lines
1.3 KiB
Markdown
# Series
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Given a string of digits, output all the contiguous substrings of length `n` in
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that string.
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For example, the string "49142" has the following 3-digit series:
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- 491
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- 914
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- 142
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And the following 4-digit series:
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- 4914
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- 9142
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And if you ask for a 6-digit series from a 5-digit string, you deserve
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whatever you get.
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Note that these series are only required to occupy *adjacent positions*
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in the input; the digits need not be *numerically consecutive*.
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* * * *
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For installation and learning resources, refer to the
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[exercism help page](http://exercism.io/languages/ruby).
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For running the tests provided, you will need the Minitest gem. Open a
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terminal window and run the following command to install minitest:
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gem install minitest
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If you would like color output, you can `require 'minitest/pride'` in
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the test file, or note the alternative instruction, below, for running
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the test file.
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Run the tests from the exercise directory using the following command:
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ruby series_test.rb
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To include color from the command line:
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ruby -r minitest/pride series_test.rb
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## Source
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A subset of the Problem 8 at Project Euler [http://projecteuler.net/problem=8](http://projecteuler.net/problem=8)
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## Submitting Incomplete Solutions
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It's possible to submit an incomplete solution so you can see how others have completed the exercise.
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