Add 2024 day1

2024/day1.py

@@ -0,0 +1,43 @@
+#!/usr/bin/env python
+from collections import Counter
+
+
+def part_one(left_list: list, right_list: list) -> int:
+    left_list.sort()
+    right_list.sort()
+
+    diffs = []
+    for left, right in zip(left_list, right_list):
+        diffs.append(abs(left - right))
+
+    return sum(diffs)
+
+
+def part_two(left_list: list, right_list: list) -> int:
+    right_counter = Counter(right_list)
+
+    similarity_score = 0
+    for left in left_list:
+        if left in right_counter:
+            similarity_score += left * right_counter[left]
+
+    return similarity_score
+
+
+def main():
+    with open("day1") as file:
+        lines = file.readlines()
+
+    left_list = []
+    right_list = []
+    for line in lines:
+        left, right = line.split()
+        left_list.append(int(left))
+        right_list.append(int(right))
+
+    print(part_one(left_list, right_list))
+    print(part_two(left_list, right_list))
+
+
+if __name__ == "__main__":
+    main()