/* * * @ Javier Felipe Toribio 2020-06-20 * * challenge by Oma Falk * * Set Game * * There are 81 different cards, each having * four features: number of shapes (one, two * or three), shape (diamond, squiggle or * oval), shading (solid, striped or open) * and color (red, green or purple). A set * consists of three cards satisfying all of * these conditions: * * They all have the same number or have * three different numbers. * They all have the same shape or have * three different shapes. * They all have the same shading or * have three different shadings. * They all have the same color or * have three different colors. * The rules of Set are summarized by: * If you can sort a group of * three cards into * "two of ____ and one of * ____", * then it is not a set. * * For example, these three cards form a set: * One red striped diamond * Two red solid diamonds * Three red open diamonds * * Given three cards, decide if they form a set * * Further readings: * https://en.wikipedia.org/wiki/Set_(card_game) */ enum class Number { One, Two, Three } enum class Shape { Diamond, Squiggle, Oval } enum class Shading { Solid, Stripped, Open } enum class Color { Red, Green, Purple } data class Card(val number : Number, val shape : Shape, val shading : Shading, val color : Color) { override fun toString() : String { return "($number, $shape, $shading, $color)" } companion object { inline fun > rand() : T{ val pos = java.util.Random(). nextInt(enumValues().size) return enumValues()[pos] } fun randomCard(): Card { return Card( rand(), rand(), rand(), rand() ) } } } class Game { companion object { fun allDifferentOrEqual(values: List): Boolean { val size = values.toSet().size return (size == 1) or (size == 3) } fun isSet(card1 : Card, card2 : Card, card3 : Card) : Boolean { val cards = arrayOf(card1, card2, card3) return allDifferentOrEqual( cards.map { it.number} ) and allDifferentOrEqual( cards.map { it.shape } ) and allDifferentOrEqual( cards.map { it.shading } ) and allDifferentOrEqual( cards.map { it.color }) } fun checkSet() { val card1 = Card.randomCard() val card2 = Card.randomCard() val card3 = Card.randomCard() println( """ Cards: $card1 $card2 $card3 Is Set ? ${isSet(card1,card2,card3)} ================================= """.trimIndent() ) } } } fun main(args : Array) { repeat(20) { Game.checkSet() } }

[challenge] set game