Permutation test: Difference between revisions
Added Kotlin
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11827, 12.80% showed better than actual results.
80551, 87.20% showed equalivalent or worse results.
</pre>
=={{header|Kotlin}}==
{{trans|C}}
<lang scala>// version 1.1.2
val data = intArrayOf(
85, 88, 75, 66, 25, 29, 83, 39, 97,
68, 41, 10, 49, 16, 65, 32, 92, 28, 98
)
fun pick(at: Int, remain: Int, accu: Int, treat: Int): Int {
if (remain == 0) return if (accu > treat) 1 else 0
return pick(at - 1, remain - 1, accu + data[at - 1], treat) +
if (at > remain) pick(at - 1, remain, accu, treat) else 0
}
fun main(args: Array<String>) {
var treat = 0
var total = 1.0
for (i in 0..8) treat += data[i]
for (i in 19 downTo 11) total *= i
for (i in 9 downTo 1) total /= i
val gt = pick(19, 9, 0, treat)
val le = (total - gt).toInt()
System.out.printf("<= : %f%% %d\n", 100.0 * le / total, le)
System.out.printf(" > : %f%% %d\n", 100.0 * gt / total, gt)
}</lang>
{{out}}
<pre>
<= : 87.197168% 80551
> : 12.802832% 11827
</pre>
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