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object sorter {
def sort(a: List[Int]): List[Int] = {
if (a.length < 2)
a
else {
val pivot = a(a.length / 2);
sort(a.filter(x => x < pivot))
::: a.filter(x => x == pivot)
::: sort(a.filter(x => x > pivot))
}
}
def main(args: Array[String]) = {
val xs = List(6, 2, 8, 5, 1);
Console.println(xs);
Console.println(sort(xs));
}
}
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