bojorenubo.kt

interface BooBoo {
    fun sayBoo(): String
}

data class Tanon(val char: String) : BooBoo {
    override fun sayBoo(): String = char
}

data class Choon(val char: String) : BooBoo {
    override fun sayBoo(): String = char + "ー"
}

fun main() {
    val chars = listOf("ボ", "ジョ", "レ", "ヌ", "ボ")
   
    val booBoos : List<BooBoo> = chars.shuffled().withIndex().map { (index, char) ->
        if (index > 1) {
            Choon(char)
        } else {
            Tanon(char)
        }
    }
    println(booBoos.map {it.sayBoo()}.joinToString(""))
}