day 1 - part 1

2024/day1/first.py

@@ -1,5 +1,29 @@
-def main():
-    pass
+from pathlib import Path
 
-if __name__ == '__main__':
+
+def get_ordered_lists(data_file: Path) -> tuple[list[int], list[int]]:
+    list1 = list()
+    list2 = list()
+    for line in data_file.open():
+        numbers = line.strip().split("  ")
+        list1.append(int(numbers[0]))
+        list2.append(int(numbers[1]))
+    return sorted(list1), sorted(list2)
+
+
+def compute_distance(list1, list2) -> int:
+    return sum([abs(item2 - item1) for item1, item2 in zip(list1, list2)])
+
+
+def compute(data_file: Path) -> int:
+    list1, list2 = get_ordered_lists(data_file)
+    return compute_distance(list1, list2)
+
+
+def main():
+    file = Path(__file__).parent / "first-input"
+    print(compute(file))
+
+
+if __name__ == "__main__":
     main()