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authorMarijn Haverbeke <[email protected]>2011-05-12 17:24:54 +0200
committerMarijn Haverbeke <[email protected]>2011-05-12 21:30:44 +0200
commit3816e57fd2a8ab19e4ac6d4b3ddd5b49d5973ff2 (patch)
tree508982ed2f789aedd89eebd529343d9dc88b8e01 /src/lib/Sort.rs
parentTransitional change to make extfmt output lowercase module name (diff)
downloadrust-3816e57fd2a8ab19e4ac6d4b3ddd5b49d5973ff2.tar.xz
rust-3816e57fd2a8ab19e4ac6d4b3ddd5b49d5973ff2.zip
Downcase std modules again, move to :: for module dereferencing
This should be a snapshot transition.
Diffstat (limited to 'src/lib/Sort.rs')
-rw-r--r--src/lib/Sort.rs101
1 files changed, 0 insertions, 101 deletions
diff --git a/src/lib/Sort.rs b/src/lib/Sort.rs
deleted file mode 100644
index 7ecaaaba..00000000
--- a/src/lib/Sort.rs
+++ /dev/null
@@ -1,101 +0,0 @@
-import Vec.len;
-import Vec.slice;
-
-type lteq[T] = fn(&T a, &T b) -> bool;
-
-fn merge_sort[T](lteq[T] le, vec[T] v) -> vec[T] {
-
- fn merge[T](lteq[T] le, vec[T] a, vec[T] b) -> vec[T] {
- let vec[T] res = vec();
- let uint a_len = len[T](a);
- let uint a_ix = 0u;
- let uint b_len = len[T](b);
- let uint b_ix = 0u;
- while (a_ix < a_len && b_ix < b_len) {
- if (le(a.(a_ix), b.(b_ix))) {
- res += vec(a.(a_ix));
- a_ix += 1u;
- } else {
- res += vec(b.(b_ix));
- b_ix += 1u;
- }
- }
- res += slice[T](a, a_ix, a_len);
- res += slice[T](b, b_ix, b_len);
- ret res;
- }
-
- let uint v_len = len[T](v);
-
- if (v_len <= 1u) {
- ret v;
- }
-
- let uint mid = v_len / 2u;
- let vec[T] a = slice[T](v, 0u, mid);
- let vec[T] b = slice[T](v, mid, v_len);
- ret merge[T](le,
- merge_sort[T](le, a),
- merge_sort[T](le, b));
-}
-
-fn swap[T](vec[mutable T] arr, uint x, uint y) {
- auto a = arr.(x);
- arr.(x) = arr.(y);
- arr.(y) = a;
-}
-
-fn part[T](lteq[T] compare_func, vec[mutable T] arr, uint left,
- uint right, uint pivot) -> uint {
-
- fn compare[T](lteq[T] compare_func, vec[mutable T]arr,
- uint arr_idx, &T arr_value) -> bool {
-
- ret compare_func(arr.(arr_idx),arr_value);
- }
-
- auto pivot_value = arr.(pivot);
- swap[T](arr, pivot, right);
- let uint storage_index = left;
- let uint i = left;
- while (i<right) {
- if (compare[T](compare_func, arr, i, pivot_value)) {
- swap[T](arr, i, storage_index);
- storage_index += 1u;
- }
- i += 1u;
- }
- swap[T](arr, storage_index, right);
- ret storage_index;
-}
-
-fn qsort[T](lteq[T] compare_func, vec[mutable T] arr, uint left,
- uint right) {
-
- if (right > left) {
- auto pivot = (left+right)/2u;
- auto new_pivot = part[T](compare_func, arr, left, right, pivot);
- if (new_pivot == 0u) {
- ret;
- }
- qsort[T](compare_func, arr, left, new_pivot - 1u);
- qsort[T](compare_func, arr, new_pivot + 1u, right);
- }
-}
-
-fn quick_sort[T](lteq[T] compare_func, vec[mutable T] arr) {
-
- if (len[T](arr) == 0u) {
- ret;
- }
- qsort[T](compare_func, arr, 0u, (len[T](arr)) - 1u);
-}
-
-// Local Variables:
-// mode: rust;
-// fill-column: 78;
-// indent-tabs-mode: nil
-// c-basic-offset: 4
-// buffer-file-coding-system: utf-8-unix
-// compile-command: "make -k -C .. 2>&1 | sed -e 's/\\/x\\//x:\\//g'";
-// End: