hasOddEven

  Write a static method called hasOddEven that takes
   three integers as parameters and that returns true if there is at least one
   odd and at least one even among the three numbers and that returns false
   otherwise.  Below are some sample calls and the appropriate value to return.

        Method                  Value          Method                  Value
         Call                  Returned         Call                  Returned
        -------------------------------        -------------------------------
        hasOddEven(2, 4, 6)      false	       hasOddEven(14, 7, 5)     true
	hasOddEven(2, 3, 4)      true	       hasOddEven(5, 4, 2)      true
	hasOddEven(12, 4, 17)    true	       hasOddEven(13, 20, 91)	true
	hasOddEven(5, 17, 4)     true          hasOddEven(7, 19, 5)	false

   You may assume that all three integers passed to your method are greater
   than or equal to 0.