Rename and challenge 12 draft

Author: maddieamie

Diff for: README.md

@@ -0,0 +1,66 @@
+from stacks_and_queues.queue import Queue
+
+# 800 297 6877
+
+# have the queue that holds the official list, then a temp queue
+# need both an enqueue and dequeue method
+# consider dequeueing the whole object instead
+
+class AnimalShelter(Queue):
+    def __init_(self, shelter_queue=Queue(), temp_queue=Queue(), reset_queue=Queue()):
+        self.shelter_queue = shelter_queue
+        self.temp_queue = temp_queue
+        self.reset_queue = reset_queue
+
+    def __repr__(self):
+        node = self.shelter_queue.front
+        nodes = []
+        while node is not None:
+            nodes.append(str(node.data))
+            node = node.next
+        return " -> ".join(nodes)
+
+    def __iter__(self):
+        current_node = self.shelter_queue.front
+        while current_node is not None:
+            yield current_node
+            current_node = current_node.next
+
+    def enqueue(self, animal: tuple[str, str]) -> None:
+
+        node = Animal(animal)
+        if self.head is None:
+            self.head = node
+            self.front = node
+            self.back = node
+            node.next = None
+
+        else:
+            self.back.next = node
+            self.back = node
+            node.next = None
+
+
+class Animal:
+    def __init__(self, species=str, name=str, _next=None):
+        self.species = species
+        self.name = name
+        self.next = _next
+
+    def __repr__(self):
+        return self
+
+
+class Dog(Animal):
+    def __init__(self):
+        super().__init__()
+        self.species = "dog"
+        self.name = ""
+
+
+class Cat(Animal):
+    def __init__(self):
+        super().__init__()
+        self.species = "cat"
+        self.name = ""
+

Diff for: working-directory/9_whiteboard/whiteboard_code_challenge_9.pdf renamed to python/9_whiteboard/whiteboard_code_challenge_9.pdf

@@ -0,0 +1,60 @@
+import pytest
+from stack_queue_animal_shelter.stack_queue_animal_shelter import AnimalShelter, Dog, Cat
+
+
+@pytest.mark.skip("TODO")
+def test_single_cat():
+    shelter = AnimalShelter()
+    cat = Cat()
+    shelter.enqueue(cat)
+    actual = shelter.dequeue("cat")
+    expected = cat
+    assert actual == expected
+
+
+@pytest.mark.skip("TODO")
+def test_single_dog():
+    shelter = AnimalShelter()
+    dog = Dog()
+    shelter.enqueue(dog)
+    actual = shelter.dequeue("dog")
+    expected = dog
+    assert actual == expected
+
+
+@pytest.mark.skip("TODO")
+def test_dog_preferred_but_cat_in_front():
+    shelter = AnimalShelter()
+    cat = Cat()
+    dog = Dog()
+    shelter.enqueue(cat)
+    shelter.enqueue(dog)
+    actual = shelter.dequeue("dog")
+    expected = dog
+    assert actual == expected
+
+
+@pytest.mark.skip("TODO")
+def test_dog_then_cat():
+    shelter = AnimalShelter()
+    cat = Cat()
+    dog = Dog()
+    shelter.enqueue(dog)
+    shelter.enqueue(cat)
+    shelter.dequeue("dog")
+    actual = shelter.dequeue("cat")
+    expected = cat
+    assert actual == expected
+
+
+@pytest.mark.skip("TODO")
+def test_bad_pref():
+    shelter = AnimalShelter()
+    cat = Cat()
+    dog = Dog()
+    shelter.enqueue(dog)
+    shelter.enqueue(cat)
+    shelter.dequeue("dog")
+    actual = shelter.dequeue("lizard")
+    expected = None
+    assert expected == actual

Diff for: working-directory/__init__.py renamed to python/__init__.py

@@ -12,7 +12,7 @@ def __init__(self, head: Any = None, back: Any = None):
         self.max_size = 8
 
     def __iter__(self):
-        current_node = self.top
+        current_node = self.front
         while current_node is not None:
             yield current_node
             current_node = current_node.next
@@ -45,7 +45,8 @@ def dequeue(self) -> Any:
         dead_node.next = None
         self.size -= 1
 
-        return dead_node.data
+        # return dead_node.data
+        return dead_node
 
     def peek(self) -> Any:
         if self.head is None: