59 lines
1.4 KiB
Markdown
59 lines
1.4 KiB
Markdown
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# Alphametics
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Write a function to solve alphametics puzzles.
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[Alphametics](https://en.wikipedia.org/wiki/Alphametics) is a puzzle where
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letters in words are replaced with numbers.
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For example `SEND + MORE = MONEY`:
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```text
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S E N D
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M O R E +
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-----------
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M O N E Y
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```
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Replacing these with valid numbers gives:
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```text
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9 5 6 7
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1 0 8 5 +
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-----------
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1 0 6 5 2
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```
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This is correct because every letter is replaced by a different number and the
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words, translated into numbers, then make a valid sum.
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Each letter must represent a different digit, and the leading digit of
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a multi-digit number must not be zero.
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Write a function to solve alphametics puzzles.
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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 alphametics_test.rb
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To include color from the command line:
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ruby -r minitest/pride alphametics_test.rb
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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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