Wordle comparison: Difference between revisions
Add Scala implementation
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(Add Scala implementation) |
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BBAABBB vs BBBBBAA green green yellow yellow green yellow yellow
BBAABBB vs AABBBAA yellow yellow yellow yellow green grey grey
</pre>
=={{header|Scala}}==
{{trans|Java}}
<syntaxhighlight lang="Scala">
object WordleComparison extends App {
case class TwoWords(answer: String, guess: String)
enum Colour extends Enum[Colour] {
case GREEN, GREY, YELLOW
}
val pairs = List(TwoWords("ALLOW", "LOLLY"), TwoWords("ROBIN", "SONIC"),
TwoWords("CHANT", "LATTE"), TwoWords("We're", "She's"), TwoWords("NOMAD", "MAMMA"))
pairs.foreach(pair => println(s"${pair.answer} v ${pair.guess} -> ${wordle(pair.answer, pair.guess)}"))
def wordle(answer: String, guess: String): List[Colour] = {
if (answer.length != guess.length) {
throw new AssertionError("The two words must be of the same length.")
}
var answerCopy = answer
var result = List.fill(guess.length)(Colour.GREY)
for (i <- guess.indices) {
if (answer(i) == guess(i)) {
answerCopy = answerCopy.updated(i, NULL)
result = result.updated(i, Colour.GREEN)
}
}
for (i <- guess.indices) {
val index = answerCopy.indexOf(guess(i))
if (index >= 0 && result(i) != Colour.GREEN) {
answerCopy = answerCopy.updated(index, NULL)
result = result.updated(i, Colour.YELLOW)
}
}
result
}
val NULL = '\u0000'
}
</syntaxhighlight>
{{out}}
<pre>
ALLOW v LOLLY -> List(YELLOW, YELLOW, GREEN, GREY, GREY)
ROBIN v SONIC -> List(GREY, GREEN, YELLOW, GREEN, GREY)
CHANT v LATTE -> List(GREY, YELLOW, YELLOW, GREY, GREY)
We're v She's -> List(GREY, GREY, YELLOW, YELLOW, GREY)
NOMAD v MAMMA -> List(GREY, YELLOW, GREEN, GREY, GREY)
</pre>
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