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Language Kotlin

Date:06/22/12
Author:Franck Rasolo
URL:http://www.linkedin.com/in/franckrasolo
Comments:0
Info:http://www.jetbrains.com/kotlin
Score: (2.90 in 31 votes)
fun main(args: Array<String>) = 99 downto 0 map { verse(it) } forEach { println(it) }

fun verse(n: Int) = when (n) {
  0 -> """N${n.bottles().substring(1)} of beer on the wall, ${n.bottles()} of beer.
Go to the store and buy some more, ${99.bottles()} of beer on the wall."""

  else -> """${n.bottles()} of beer on the wall, ${n.bottles()} of beer.
Take one down and pass it around, ${(n - 1).bottles()} of beer on the wall.
"""
}

fun Int.bottles() = when (this) { 0 -> "no more bottles" 1 -> "1 bottle" else -> "$this bottles" }

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