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2013-04-11 01:07:29 -07:00 · 2013-04-11 01:07:29 -07:00 · 68f8f3e56b
commit 68f8f3e56b
parent b83f433714
14735 changed files with 178959 additions and 0 deletions
--- a/Task/Sorting-algorithms-Permutation-sort/Ruby/sorting-algorithms-permutation-sort.rb
+++ b/Task/Sorting-algorithms-Permutation-sort/Ruby/sorting-algorithms-permutation-sort.rb
@ -0,0 +1,13 @@
+class Array
+  def permutationsort
+    permutations = permutation
+    begin
+      perm = permutations.next
+    end until perm.sorted?
+    perm
+  end
+
+  def sorted?
+    each_cons(2).all? {|a, b| a <= b}
+  end
+end