Execute a Markov algorithm: Difference between revisions
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(Added Scala) |
(→{{header|Scala}}: script style) |
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=={{header|Scala}}== |
=={{header|Scala}}== |
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{{works with|Scala|2.8}} |
{{works with|Scala|2.8}} |
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<lang scala>import scala. |
<lang scala>import scala.io.Source |
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object MarkovAlgorithm { |
object MarkovAlgorithm { |
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} |
} |
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}</lang> |
}</lang> |
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Script-style, and more concise: |
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if (argv.size != 2 ) { |
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println("Syntax: MarkovAlgorithm inputFile inputPattern") |
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exit(1) |
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} |
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val rulePattern = """(.*?)\s+->\s+(\.?)(.*)""".r |
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val isComment = (_: String) matches "#.*|\\s*" |
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val rules = Source fromPath args(0) getLines () filterNot isComment map (rulePattern unapplySeq _ get) toList; |
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def algorithm(input: String): String = rules find (input contains _.head) match { |
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case Some(Seq(pattern, ".", replacement)) => input replaceFirst ("\\Q"+pattern+"\\E", replacement) |
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case Some(Seq(pattern, "", replacement)) => algorithm(input replaceFirst ("\\Q"+pattern+"\\E", replacement)) |
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case None => input |
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} |
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println(argv(1)) |
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println(algorithm(argv(1)))</lang> |
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Sample outputs: |
Sample outputs: |
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11111111111111111111 |
11111111111111111111 |
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</pre> |
</pre> |
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The script is called much in the same way, but with the ".scala" extension added. |
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=={{header|Tcl}}== |
=={{header|Tcl}}== |
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