day 1

2024/.mise.toml

@@ -0,0 +1,2 @@
+[tools]
+python = "3.11"

2024/python/day01.py

@@ -0,0 +1,54 @@
+import shared
+import itertools
+import functools
+from collections import defaultdict
+
+
+# @shared.profile
+def part1(rows):
+    left = []
+    right = []
+    for row in rows:
+        r = row.split()
+        left.append(int(r[0]))
+        right.append(int(r[1]))
+    left = list(sorted(left))
+    right = list(sorted(right))
+    pairs = list(zip(left,right))
+    diffs = []
+    for l, r in pairs:
+        diffs.append(abs(r - l))
+    print(sum(diffs))
+
+
+# @shared.profile
+def part2(rows):
+    left = []
+    right = []
+    for row in rows:
+        r = row.split()
+        left.append(int(r[0]))
+        right.append(int(r[1]))
+    right_hist = defaultdict(int)
+    for r in right:
+        right_hist[r] += 1
+    tot = 0
+    for l in left:
+        tot += l * right_hist[l]
+    print(tot)
+
+
+def main():
+    rows = [row for row in shared.load_rows(1)]
+    with shared.elapsed_timer() as elapsed:
+        part1(rows)
+        print("🕒", elapsed())
+
+    rows = [row for row in shared.load_rows(1, True)]
+    with shared.elapsed_timer() as elapsed:
+        part2(rows)
+        print("🕒", elapsed())
+
+
+if __name__ == "__main__":
+    main()

2024/samples/day01.txt

@@ -0,0 +1,6 @@
+3   4
+4   3
+2   5
+1   3
+3   9
+3   3