Stair-climbing puzzle: Difference between revisions
Added Kotlin
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</pre>
=={{header|Kotlin}}==
{{trans|D}}
<lang scala>// version 1.2.0
import java.util.Random
val rand = Random(6321L) // generates short repeatable sequence
var position = 0
fun step(): Boolean {
val r = rand.nextBoolean()
if (r)
println("Climbed up to ${++position}")
else
println("Fell down to ${--position}")
return r
}
fun stepUp() {
while (!step()) stepUp()
}
fun main(args: Array<String>) {
stepUp()
}</lang>
{{out}}
<pre>
Fell down to -1
Fell down to -2
Climbed up to -1
Climbed up to 0
Fell down to -1
Climbed up to 0
Fell down to -1
Climbed up to 0
Climbed up to 1
</pre>
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