Created
April 2, 2010 10:14
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def sort(xs: Array[Int]) { | |
def swap(i: Int, j: Int) { | |
val t = xs(i); xs(i) = xs(j); xs(j) = t | |
} | |
def sort1(l: Int, r: Int) { | |
val pivot = xs((l + r) / 2) | |
var i = l; var j = r | |
while (i <= j) { | |
while (xs(i) < pivot) i += 1 | |
while (xs(j) > pivot) j -= 1 | |
if (i <= j) { | |
swap(i, j) | |
i += 1 | |
j -= 1 | |
} | |
} | |
if (l < j) sort1(l, j) | |
if (j < r) sort1(i, r) | |
} | |
sort1(0, xs.length - 1) | |
} |
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