Day 01

day01.py

@@ -0,0 +1,24 @@
+#!/usr/bin/env python3
+
+from collections import Counter
+from functools import reduce
+
+# 1
+
+with open("day01") as f:
+  lines = f.readlines()
+
+els = [l.split() for l in lines]
+l1 = [int(el[0]) for el in els]
+l2 = [int(el[1]) for el in els]
+
+l1.sort()
+l2.sort()
+
+d = [abs(e[0] - e[1]) for e in zip(l1, l2)]
+res = sum(d)
+
+
+# 2
+ctn = Counter(l2)
+res = reduce(lambda accum, e: accum + e*ctn.get(e, 0), l1, 0)