The Chefs have decided that they want to be able to alternate their lunch menu items; in other words,
they will offer some items on Monday, Wednesday, Friday and Sunday, and other items on Tuesday,
Thursday, and Saturday. Someone already wrote the code for a new “Alternating” DinerMenu Iterator
so that it alternates the menu items, but they scrambled it up and put it on the fridge in the Diner as a
joke. Can you put it back together? Some of the curly braces fell on the fl oor and they were too small
to pick up, so feel free to add as many of those as you need.