Start on d5p1

day4/run.py

@@ -28,7 +28,7 @@ class FindXMAS:
 
     @property
     def _part2(self) -> int:
-        return len(self.locate_x_mas())
+        return len(self.locate_x_mas()) // 2
 
     @staticmethod
     def _to_grid(input: str) -> List[List[str]]:
@@ -98,13 +98,14 @@ class FindXMAS:
             if loc[1] in oth:
                 locations.append(loc)
 
-        return mas
+        return locations
 
 
 if __name__ == "__main__":
     example = FindXMAS(EXAMPLE)
     print(example)
     assert example._part1 == 18
+    assert example._part2 == 9
     with open("input.txt", "r") as f:
         puzzle = FindXMAS(f.read())
         print(puzzle)

day5/run.py

@@ -0,0 +1,76 @@
+from typing import Callable, List
+
+EXAMPLE = """
+47|53
+97|13
+97|61
+97|47
+75|29
+61|13
+75|53
+29|13
+97|29
+53|29
+61|53
+97|53
+61|29
+47|13
+75|47
+97|75
+47|61
+75|61
+47|29
+75|13
+53|13
+
+75,47,61,53,29
+97,61,53,29,13
+75,29,13
+75,97,47,61,53
+61,13,29
+97,13,75,29,47
+"""
+
+
+class CheckManual:
+    def __init__(self, input: str) -> None:
+        self._input = input[1:]
+        sep = self._input.splitlines().index("")
+        self.rules = self.parse_rules(self._input.splitlines()[:sep])
+        self.pages = self._input.splitlines()[sep:]
+
+    def __str__(self) -> str:
+        return f"Part1: {self._part1}\nPart2: {self._part2}"
+
+    @property
+    def _part1(self) -> int:
+        return None
+
+    @property
+    def _part2(self) -> int:
+        return None
+
+    def parse_rules(
+        self, rules: List[str], sep: str = "|"
+    ) -> List[Callable[[str], bool]]:
+        def make_rule(rule: str, sep: str = "|") -> Callable[[str], bool]:
+            left, right = rule.split(sep)
+
+            def check(pages: str) -> bool:
+                _pages = pages.split(",")
+                try:
+                    _pages.index(left) < _pages.index(right)
+                except ValueError:
+                    return True
+
+            return check
+
+        return [make_rule(rule) for rule in rules]
+
+    def check_page_order(self) -> List[bool]:
+        return [all([check(line) for check in self.rules]) for line in self.pages]
+
+
+if __name__ == "__main__":
+    example = CheckManual(EXAMPLE)
+    print(example)