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51 lines
1.4 KiB
Markdown
51 lines
1.4 KiB
Markdown
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# 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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