[Python/2017] Move solutions into .py files

Python/2017/10.py

@@ -0,0 +1,55 @@
+from lib import *
+
+input = read_input(2017, 10).strip()
+
+
+nums = [*range(256)]
+pos = 0
+skip = 0
+
+
+def rev(a, b):
+    a %= len(nums)
+    b = (b - a) % len(nums)
+    nums[:] = nums[a:] + nums[:a]
+    nums[:b] = nums[:b][::-1]
+    nums[:] = nums[-a:] + nums[:-a]
+
+
+for length in map(int, input.split(",")):
+    rev(pos, pos + length)
+    pos += length + skip
+    skip += 1
+
+print(nums[0] * nums[1])
+
+
+lengths = [*map(ord, input), 17, 31, 73, 47, 23]
+nums = [*range(256)]
+pos = 0
+skip = 0
+
+
+def rev(a, b):
+    a %= len(nums)
+    b = (b - a) % len(nums)
+    nums[:] = nums[a:] + nums[:a]
+    nums[:b] = nums[:b][::-1]
+    nums[:] = nums[-a:] + nums[:-a]
+
+
+for _ in range(64):
+    for length in lengths:
+        rev(pos, pos + length)
+        pos += length + skip
+        skip += 1
+
+dense = []
+for i in range(16):
+    x = 0
+    for j in range(16):
+        x ^= nums[i * 16 + j]
+
+    dense.append(x)
+
+print("".join(f"{x:02x}" for x in dense))