day12

day12/day12.py

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+import re
+
+
+def part1():
+    file = open("input.txt")
+    lines = [i.strip() for i in file.readlines()]
+
+    direction = 0
+    x = 0
+    y = 0
+    for line in lines:
+        val = re.split("([A-Z]){1}([0-9]+)", line)
+        action = val[1]
+        value = int(val[2])
+
+        if action == "N":
+            y += value
+        elif action == "S":
+            y -= value
+        elif action == "E":
+            x += value
+        elif action == "W":
+            x -= value
+        elif action == "L":
+            direction = (direction - value) % 360
+        elif action == "R":
+            direction = (direction + value) % 360
+        elif action == "F":
+            if direction == 0:
+                x += value
+            elif direction == 90:
+                y -= value
+            elif direction == 180:
+                x -= value
+            elif direction == 270:
+                y += value
+
+        # print(f'{x} - {y}')
+
+    print(f"Part 1: {(abs(x) + abs(y))}")
+
+
+def part2():
+    file = open("input.txt")
+    lines = [i.strip() for i in file.readlines()]
+
+    ship = {'x': 0, 'y': 0}
+    waypoint = {'x': 10, 'y': 1}
+
+    for line in lines:
+        val = re.split("([A-Z]){1}([0-9]+)", line)
+        action = val[1]
+        value = int(val[2])
+
+        if action == "N":
+            waypoint['y'] += value
+        elif action == "S":
+            waypoint['y'] -= value
+        elif action == "E":
+            waypoint['x'] += value
+        elif action == "W":
+            waypoint['x'] -= value
+        elif action == "L":
+            x = waypoint['x']
+            y = waypoint['y']
+            if value == 90:
+                waypoint['x'] = y * -1
+                waypoint['y'] = x
+            elif value == 180:
+                waypoint['x'] = -x
+                waypoint['y'] = -y
+            elif value == 270:
+                waypoint['y'] = x * -1
+                waypoint['x'] = y
+
+        elif action == "R":
+            x = waypoint['x']
+            y = waypoint['y']
+            if value == 90:
+                waypoint['x'] = y
+                waypoint['y'] = x * -1
+            elif value == 180:
+                waypoint['x'] = -x
+                waypoint['y'] = -y
+            elif value == 270:
+                waypoint['y'] = x
+                waypoint['x'] = y * -1
+
+        elif action == "F":
+            ship['x'] += waypoint['x'] * value
+            ship['y'] += waypoint['y'] * value
+
+    print(f"Part 2: {(abs(ship['x']) + abs(ship['y']))}")
+
+
+if __name__ == "__main__":
+    part1()
+    part2()

day12/input.txt

@@ -0,0 +1,769 @@
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