randomize.rb in rex-text-0.2.21

- old
+ new

@@ -33,22 +33,18 @@
     #
     # @param str [String] The string to randomize
     # @return [Array<String>]
     # @see permute_case
     def self.to_mixed_case_array(str)
-      letters = []
-      str.scan(/./).each { |l| letters << [l.downcase, l.upcase] }
-      coords = []
-      (1 << str.size).times { |i| coords << ("%0#{str.size}b" % i) }
-      mixed = []
-      coords.each do |coord|
-        c = coord.scan(/./).map {|x| x.to_i}
+      letters = str.each_char.map { |l| [l.downcase, l.upcase] }
+      (1 << str.size).times.map do |i| 
         this_str = ""
-        c.each_with_index { |d,i| this_str << letters[i][d] }
-        mixed << this_str
-      end
-      return mixed.uniq
+        ("%0#{str.size}b" % i).each_char.map(&:to_i).each_with_index do |d,i|
+          this_str << letters[i][d]
+        end
+        this_str
+      end.uniq
     end
 
     #
     # Randomize the whitespace in a string
     #
@@ -81,21 +77,10 @@
     # Modifies +arr+ in place
     #
     # @param arr [Array] The array to be shuffled
     # @return [Array]
     def self.shuffle_a(arr)
-      len = arr.length
-      max = len - 1
-      cyc = [* (0..max) ]
-      for d in cyc
-        e = rand(d+1)
-        next if e == d
-        f = arr[d];
-        g = arr[e];
-        arr[d] = g;
-        arr[e] = f;
-      end
-      return arr
+      arr.shuffle!
     end
 
     # Permute the case of a word
     def self.permute_case(word, idx=0)
       res = []