Finished day5

day5/run.py

@@ -55,7 +55,7 @@ class CheckManual:
 
     @property
     def _part2(self) -> int:
-        return None
+        return sum([int(val[len(val) // 2]) for val in self.fix_page_order()])
 
     def parse_rules(
         self, rules: List[str], sep: str = "|"
@@ -71,16 +71,31 @@ class CheckManual:
 
             return check
 
-        return [make_rule(rule) for rule in rules]
+        return [(rule, 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]
+        return [all([rule[1](line) for rule in self.rules]) for line in self.pages]
+
+    def fix_page_order(self) -> List[str]:
+        to_fix = [page for page, check in zip(self.pages, self.validity) if not check]
+        fixed = []
+        for pages in to_fix:
+            while not all([rule[1](pages) for rule in self.rules]):
+                for rule in self.rules:
+                    if not rule[1](pages):
+                        break
+                r1, r2 = rule[0].split("|")
+                i1, i2 = pages.index(r1), pages.index(r2)
+                pages[i1], pages[i2] = pages[i2], pages[i1]
+            fixed.append(pages)
+        return fixed
 
 
 if __name__ == "__main__":
     example = CheckManual(EXAMPLE)
     print(example)
     assert example._part1 == 143
+    assert example._part2 == 123
     with open("input.txt", "r") as f:
         main = CheckManual(f.read())
         print(main)