Initial commit

2016/day1

@@ -0,0 +1 @@
+R1, L4, L5, L5, R2, R2, L1, L1, R2, L3, R4, R3, R2, L4, L2, R5, L1, R5, L5, L2, L3, L1, R1, R4, R5, L3, R2, L4, L5, R1, R2, L3, R3, L3, L1, L2, R5, R4, R5, L5, R1, L190, L3, L3, R3, R4, R47, L3, R5, R79, R5, R3, R1, L4, L3, L2, R194, L2, R1, L2, L2, R4, L5, L5, R1, R1, L1, L3, L2, R5, L3, L3, R4, R1, R5, L4, R3, R1, L1, L2, R4, R1, L2, R4, R4, L5, R3, L5, L3, R1, R1, L3, L1, L1, L3, L4, L1, L2, R1, L5, L3, R2, L5, L3, R5, R3, L4, L2, R2, R4, R4, L4, R5, L1, L3, R3, R4, R4, L5, R4, R2, L3, R4, R2, R1, R2, L4, L2, R2, L5, L5, L3, R5, L5, L1, R4, L1, R1, L1, R4, L5, L3, R4, R1, L3, R4, R1, L3, L1, R1, R2, L4, L2, R1, L5, L4, L5

2016/day1.py

@@ -0,0 +1,98 @@
+#!/usr/bin/env python3
+
+def turn(direction, facing):
+    match facing:
+        case 'North':
+            if direction == 'R':
+                facing = 'East'
+            else:
+                facing = 'West'
+        case 'East':
+            if direction == 'R':
+                facing = 'South'
+            else:
+                facing = 'North'
+        case 'South':
+            if direction == 'R':
+                facing = 'West'
+            else:
+                facing = 'East'
+        case 'West':
+            if direction == 'R':
+                facing = 'North'
+            else:
+                facing = 'South'
+    return facing
+
+
+def check_locations(blocks, facing, x_coord, y_coord, locations):
+    x_coord, y_coord = locations[-1]
+    match facing:
+        case 'North':
+            for block in range(1, blocks + 1):
+                if [x_coord + block, y_coord] in locations:
+                    return [x_coord + block, y_coord]
+                locations.append([x_coord + block, y_coord])
+        case 'East':
+            for block in range(1, blocks + 1):
+                if [x_coord, y_coord + block] in locations:
+                    return [x_coord, y_coord + block]
+                locations.append([x_coord, y_coord + block])
+        case 'South':
+            for block in range(1, blocks + 1):
+                if [x_coord - block, y_coord] in locations:
+                    return [x_coord - block, y_coord]
+                locations.append([x_coord - block, y_coord])
+        case 'West':
+            for block in range(1, blocks + 1):
+                if [x_coord, y_coord - block] in locations:
+                    return [x_coord, y_coord - block]
+                locations.append([x_coord, y_coord - block])
+
+
+def walk(blocks, facing, x_coord, y_coord):
+    match facing:
+        case 'North':
+            x_coord += blocks
+        case 'East':
+            y_coord += blocks
+        case 'South':
+            x_coord -= blocks
+        case 'West':
+            y_coord -= blocks
+    return x_coord, y_coord
+
+
+def main():
+    x_coord = 0
+    y_coord = 0
+    facing = 'North'
+
+    with open('day1', 'r') as file:
+        line = file.readlines()[0][:-1]
+    
+    sequences = line.split(', ')
+
+    locations = [[0,0]]
+    hq_loc = []
+
+    for sequence in sequences:
+        direction = sequence[0]
+        blocks = int(sequence[1:])
+        facing = turn(direction, facing)
+        x_coord, y_coord = walk(blocks , facing, x_coord, y_coord)
+
+    for sequence in sequences:
+        direction = sequence[0]
+        blocks = int(sequence[1:])
+        facing = turn(direction, facing)
+        hq_loc = check_locations(blocks, facing, x_coord, y_coord, locations)
+        if hq_loc:
+            break
+
+    print(abs(x_coord) + abs(y_coord))
+    print(abs(hq_loc[0]) + abs(hq_loc[1]))
+
+
+if __name__ == '__main__':
+    main()