Add day 2 solution

day-02/day-02.py

@@ -0,0 +1,40 @@
+#!/usr/bin/python3
+
+def part_1(input):
+    h_pos = 0
+    depth = 0
+    for line in input:
+        step = line.split()
+        if 'forward' == step[0]:
+            h_pos += int(step[1])
+        elif 'up' == step[0]:
+            depth -= int(step[1])
+        elif 'down' == step[0]:
+            depth += int(step[1])
+    result = h_pos * depth
+    print("Part 1 result:", result)
+
+
+def part_2(input):
+    h_pos = 0
+    depth = 0
+    aim = 0
+    for line in input:
+        step = line.split()
+        if 'forward' == step[0]:
+            h_pos += int(step[1])
+            depth += aim * int(step[1])
+        elif 'up' == step[0]:
+            aim -= int(step[1])
+        elif 'down' == step[0]:
+            aim += int(step[1])
+    result = h_pos * depth
+    print("Part 2 result:", result)
+
+
+input = list()
+with open('input.txt') as fp:
+    input = fp.readlines()
+
+part_1(input)
+part_2(input)