average median feature implementation

maths/average_median.rb

@@ -0,0 +1,37 @@
+# A ruby program to find average median
+
+module AverageMedian
+
+  def self.average_median(n, *array)
+    if n.instance_of? Integer
+      if n == array.size
+        array.sort
+        if array.size%2 == 0
+          mid_element_1 = array.size/2
+          mid_element_2 = mid_element_1 + 1
+          puts "The average median of the following elements #{array} is #{(array[mid_element_1-1] + array[mid_element_2-1])/2}."
+        else
+          mid_element = (array.size + 1)/2
+          puts "The average median of the following elements #{array} is #{array[mid_element-1]}."
+        end
+      else
+        puts "Provide the required #{n} elements properly!"
+      end
+    else
+      raise
+    end
+    rescue
+      puts "Error: Please provide number only!"
+  end
+end
+
+# Valid inputs
+AverageMedian.average_median(2, 3, 1)
+AverageMedian.average_median(5, 1, 2, 3, 4, 5)
+AverageMedian.average_median(3, 2, 2, 2)
+AverageMedian.average_median(1, 5)
+
+# Invalid inputs
+AverageMedian.average_median(2, 3, 1, 5)
+AverageMedian.average_median(2, 3, "a")
+AverageMedian.average_median("a", 1, 2)