Factors of an integer: Difference between revisions

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@@ Line 1,588: / Line 1,588: @@
   def factors
     f = [] of Int32
-.upto(Math.sqrt(self)).select { |i| (self % i).zero? }
+    (1..Math.sqrt(self)).each{ |i|
-      .each { |i|
+      if (self % i).zero?
         f << (self // i) unless i == (self // i)
         f << i
-      }
+      end
+    }
     f.sort
   end