Execute HQ9+: Difference between revisions

=={{header|Kotlin}}==

<lang scala>// version 1.1.3

fun hq9plus(code: String) {

var acc = 0

val sb = StringBuilder()

for (c in code) {

sb.append(

when (c) {

'h', 'H' -> "Hello, world!\n"

'q', 'Q' -> code + "\n"

'9'-> {

val sb2 = StringBuilder()

for (i in 99 downTo 1) {

val s = if (i > 1) "s" else ""

sb2.append("$i bottle$s of beer on the wall\n")

sb2.append("$i bottle$s of beer\n")

sb2.append("Take one down, pass it around\n")

}

sb2.append("No more bottles of beer on the wall!\n")

sb2.toString()

}

'+' -> { acc++; "" } // yeah, it's weird!

else -> throw IllegalArgumentException("Code contains illegal operation '$c'")

}

)

}

println(sb)

}

fun main(args: Array<String>) {

val code = args[0] // pass in code as command line argument (using hq9+)

hq9plus(code)

}</lang>

{{out}}

<pre>

Hello, world!

hq9+

99 bottles of beer on the wall

99 bottles of beer

Take one down, pass it around

....

2 bottles of beer on the wall

2 bottles of beer

Take one down, pass it around

1 bottle of beer on the wall

1 bottle of beer

Take one down, pass it around

No more bottles of beer on the wall!

</pre>