[Python/2017] Move solutions into .py files

Python/2017/19.py

@@ -0,0 +1,53 @@
+from lib import *
+
+input = read_input(2017, 19)
+
+lines = input.splitlines()
+
+
+w, h = len(lines[0]), len(lines)
+x, y = lines[0].index("|"), 0
+dx, dy = 0, 1
+out = ""
+get = lambda x, y: lines[y][x] if y in range(h) and x in range(w) else " "
+while True:
+    c = get(x, y)
+    f = get(x + dx, y + dy)
+    l = get(x + dy, y - dx)
+    r = get(x - dy, y + dx)
+    if c.isalpha():
+        out += c
+    if f == " ":
+        if l != " ":
+            dx, dy = dy, -dx
+        elif r != " ":
+            dx, dy = -dy, dx
+        else:
+            break
+    x += dx
+    y += dy
+
+print(out)
+
+
+w, h = len(lines[0]), len(lines)
+x, y = lines[0].index("|"), 0
+dx, dy = 0, 1
+out = 0
+get = lambda x, y: lines[y][x] if y in range(h) and x in range(w) else " "
+while True:
+    out += 1
+    f = get(x + dx, y + dy)
+    l = get(x + dy, y - dx)
+    r = get(x - dy, y + dx)
+    if f == " ":
+        if l != " ":
+            dx, dy = dy, -dx
+        elif r != " ":
+            dx, dy = -dy, dx
+        else:
+            break
+    x += dx
+    y += dy
+
+print(out)