Initial commit with days 1, 2, and 3

Signed-off-by: Alek Ratzloff <alekratz@gmail.com>

day01/day01.py

@@ -0,0 +1,32 @@
+#!/usr/bin/env python3
+import sys
+from typing import Sequence
+
+
+def part1(lines: Sequence[int]):
+    inc = 0
+    last = lines[0]
+    for line in lines[1:]:
+        if line > last:
+            inc += 1
+        last = line
+    print(f"{inc} increments")
+
+
+def part2(lines: Sequence[int]):
+    WINDOW_SIZE = 3
+    last = sum(lines[0:WINDOW_SIZE])
+    inc = 0
+    for i in range(1, len(lines) - WINDOW_SIZE + 1):
+        window = sum(lines[i:i+WINDOW_SIZE])
+        if window > last:
+            inc += 1
+        last = window
+    print(f"{inc} increments")
+
+
+lines = [int(line) for line in sys.stdin if line]
+print("Part 1")
+part1(lines)
+print("Part 2")
+part2(lines)