42 lines
1.4 KiB
Markdown
42 lines
1.4 KiB
Markdown
# Dominoes
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Make a chain of dominoes.
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Compute a way to order a given set of dominoes in such a way that they form a
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correct domino chain (the dots on one half of a stone match the dots on the
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neighbouring half of an adjacent stone) and that dots on the halves of the
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stones which don't have a neighbour (the first and last stone) match each other.
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For example given the stones `[2|1]`, `[2|3]` and `[1|3]` you should compute something
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like `[1|2] [2|3] [3|1]` or `[3|2] [2|1] [1|3]` or `[1|3] [3|2] [2|1]` etc, where the first and last numbers are the same.
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For stones `[1|2]`, `[4|1]` and `[2|3]` the resulting chain is not valid: `[4|1] [1|2] [2|3]`'s first and last numbers are not the same. 4 != 3
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Some test cases may use duplicate stones in a chain solution, assume that multiple Domino sets are being used.
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## Setup
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Go through the setup instructions for Kotlin to install the necessary
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dependencies:
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[https://exercism.io/tracks/kotlin/installation](https://exercism.io/tracks/kotlin/installation)
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## Making the test suite pass
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Execute the tests with:
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```bash
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$ ./gradlew test
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```
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> Use `gradlew.bat` if you're on Windows
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In the test suites all tests but the first have been skipped.
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Once you get a test passing, you can enable the next one by removing the
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`@Ignore` annotation.
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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
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completed the exercise.
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