TEST 13

matricola: ______________________________

nome (solo se non si ricorda la matricola): __________________________________

• Consider the following precedence relation and write a Scheme program having it as induced precedence relation.

•   The inhabitants of the magic reign of Hargaar are called Yunz and were created centuries ago by the magician Frunz . They are beings that help students during theirs tests.
    In order to create a Yunz, Frunz used to pronounce two numbers whereas he touched two Yunzs with his magic stick. Before the arrival of Frunz, the only Yunz who lived in Hargaar was the dwarf Yor.
  Define in Sheme the data type Yunz.

•  The Yunzs have decided to choose a king among themselves. The king will be the Yunz that has been created by means of the greater number of touches of Frunz's magic stick. Help the Yunzs to choose their king: write a Scheme function which, given a Yunz, returns such a number.