1 files changed, 63 insertions, 0 deletions

diff --git a/day2/__init__.py b/day2/__init__.py
new file mode 100644
index 0000000..988c32e
--- /dev/null
+++ b/day2/__init__.py
@@ -0,0 +1,63 @@
+import re
+from dataclasses import dataclass
+from typing import Generator
+
+from aoc import AssignmentBase
+
+
+matcher = re.compile(
+    pattern=r'(?P<min>\d+)-(?P<max>\d+) (?P<letter>\w): (?P<password>\w+)'
+)
+
+
+@dataclass
+class Item:
+    min: int
+    max: int
+    letter: str
+    password: str
+
+
+class Assignment(AssignmentBase):
+    def parse_item(self, item: str) -> Item:
+        match = matcher.match(item).groupdict()
+        return Item(
+            min=int(match['min']),
+            max=int(match['max']),
+            letter=match['letter'],
+            password=match['password'],
+        )
+
+    def valid_password(self, item: Item) -> bool:
+        raise NotImplementedError('Implement Valid Password')
+
+    def run(self, input: Generator):
+        valid_passwords = 0
+
+        for i in input:
+            if self.valid_password(i):
+                valid_passwords += 1
+
+        return valid_passwords
+
+
+class AssignmentOne(Assignment):
+    def valid_password(self, item: Item) -> bool:
+        return item.min <= item.password.count(item.letter) <= item.max
+
+
+class AssignmentTwo(Assignment):
+    def valid_password(self, item: Item) -> bool:
+        return (
+            (
+                    item.password[item.min - 1] == item.letter
+                    and
+                    item.password[item.max - 1] != item.letter
+            )
+            or
+            (
+                    item.password[item.min - 1] != item.letter
+                    and
+                    item.password[item.max - 1] == item.letter
+            )
+        )