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author | Gilles Dubochet <gilles.dubochet@epfl.ch> | 2005-12-16 18:44:33 +0000 |
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committer | Gilles Dubochet <gilles.dubochet@epfl.ch> | 2005-12-16 18:44:33 +0000 |
commit | 53a3cc7b17f4cf97075b7e71720777fd84109696 (patch) | |
tree | 0cc784e0b47ea49cc151a136d19f20bfa8ee2197 /docs/examples/sort.scala | |
parent | df50e05006b43b007c2587549030d24b5c154398 (diff) | |
download | scala-53a3cc7b17f4cf97075b7e71720777fd84109696.tar.gz scala-53a3cc7b17f4cf97075b7e71720777fd84109696.tar.bz2 scala-53a3cc7b17f4cf97075b7e71720777fd84109696.zip |
Created proper 'docs' folder for new layout.
Diffstat (limited to 'docs/examples/sort.scala')
-rw-r--r-- | docs/examples/sort.scala | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/docs/examples/sort.scala b/docs/examples/sort.scala new file mode 100644 index 0000000000..6554a2415b --- /dev/null +++ b/docs/examples/sort.scala @@ -0,0 +1,48 @@ +package examples; + +object sort { + + def sort(a: Array[Int]): Unit = { + + def swap(i: Int, j: Int): Unit = { + val t = a(i); a(i) = a(j); a(j) = t; + } + + def sort1(l: Int, r: Int): Unit = { + val pivot = a((l + r) / 2); + var i = l; + var j = r; + while (i <= j) { + while (a(i) < pivot) { i = i + 1 } + while (a(j) > pivot) { j = j - 1 } + if (i <= j) { + swap(i, j); + i = i + 1; + j = j - 1; + } + } + if (l < j) sort1(l, j); + if (j < r) sort1(i, r); + } + + if (a.length > 0) + sort1(0, a.length - 1); + } + + def println(ar: Array[Int]) = { + def print1 = { + def iter(i: Int): String = + ar(i) + (if (i < ar.length-1) "," + iter(i+1) else ""); + if (ar.length == 0) "" else iter(0) + } + Console.println("[" + print1 + "]") + } + + def main(args: Array[String]) = { + val ar = Array(6, 2, 8, 5, 1); + println(ar); + sort(ar); + println(ar) + } + +} |