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We are working towards making exercises stand-alone. That is to say: no more generating READMEs on the fly. This will give maintainers more control over each individual exercise README, and it will also make some of the backend logic for delivering exercises simpler. The README template uses the Go text/template package, and the default templates generate the same READMEs as we have been generating on the fly. See the documentation in [regenerating exercise readmes][regenerate-docs] for details. The READMEs can be generated at any time using a new 'generate' command in configlet. This command has not yet landed in master or been released, but can be built from source in the generate-readmes branch on [configlet][]. [configlet]: https://github.com/exercism/configlet [regenerate-docs]: https://github.com/exercism/docs/blob/master/maintaining-a-track/regenerating-exercise-readmes.md
50 lines
1.4 KiB
Markdown
50 lines
1.4 KiB
Markdown
# Largest Series Product
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Given a string of digits, calculate the largest product for a contiguous
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substring of digits of length n.
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For example, for the input `'1027839564'`, the largest product for a
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series of 3 digits is 270 (9 * 5 * 6), and the largest product for a
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series of 5 digits is 7560 (7 * 8 * 3 * 9 * 5).
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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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For the input `'73167176531330624919225119674426574742355349194934'`,
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the largest product for a series of 6 digits is 23520.
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## Elm Installation
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Refer to the [Exercism help page](http://exercism.io/languages/elm) for Elm
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installation and learning resources.
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## Writing the Code
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The first time you start an exercise, you'll need to ensure you have the
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appropriate dependencies installed.
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```bash
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$ npm install
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```
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Execute the tests with:
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```bash
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$ npm test
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```
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Automatically run tests again when you save changes:
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```bash
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$ npm run watch
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```
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As you work your way through the test suite, be sure to remove the `skip <|`
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calls from each test until you get them all passing!
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## Source
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A variation on 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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