Wordle comparison: Difference between revisions

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=={{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)