bench Array#sort methods

benchmark/core/array/bench_sort.rb

@@ -0,0 +1,58 @@
+require 'benchmark'
+require 'benchmark/ips'
+
+Benchmark.ips do |x|
+  array = %w(Lorem ipsum singulis assentior ei pro ius eu choro verterem his dicta possim epicurei at Atomorum sadipscing ne cum sit ex hinc eros tation Eu mea oblique indoctum sed nostro mandamus recteque ut Ei usu labitur consequuntur Cu postulant consulatu reprimique vim his debet mucius platonem ne mucius facilis scriptorem vim ei)
+
+  x.report "sort up" do |times|
+    i = 0
+    while i < times
+      array.sort
+      i += 1
+    end
+  end
+
+  x.report "array sort! up" do |times|
+    i = 0
+    while i < times
+      array2 = array.dup
+      array2.sort!
+      i += 1
+    end
+  end
+
+  x.report "sort up and reverse!" do |times|
+    i = 0
+    while i < times
+      array.sort.reverse!
+      i += 1
+    end
+  end
+
+  x.report "sort! up and reverse!" do |times|
+    i = 0
+    while i < times
+      array2 = array.dup
+      array2.sort!.reverse!
+      i += 1
+    end
+  end
+
+  x.report "sort down with block" do |times|
+    i = 0
+    while i < times
+      array.sort { |a,b| b <=> a }
+      i += 1
+    end
+  end
+
+  x.report "sort! down with block" do |times|
+    i = 0
+    while i < times
+      array2 = array.dup
+      array2.sort! { |a,b| b <=> a }
+      i += 1
+    end
+  end
+
+end