Added 2017/10 part 2

2017/10/10.md

@@ -89,8 +89,6 @@ first two numbers in the list*?
 
 Your puzzle answer was `19591`.
 
-The first half of this puzzle is complete! It provides one gold star: \*
-
 ## \-\-- Part Two \-\-- {#part2}
 
 The logic you\'ve constructed forms a single *round* of the *Knot Hash*
@@ -163,7 +161,13 @@ Treating your puzzle input as a string of ASCII characters, *what is the
 Knot Hash of your puzzle input?* Ignore any leading or trailing
 whitespace you might encounter.
 
-Answer:
+Your puzzle answer was `62e2204d2ca4f4924f6e7a80f1288786`.
 
-Although it hasn\'t changed, you can still [get your puzzle
+Both parts of this puzzle are complete! They provide two gold stars:
+\*\*
+
+At this point, you should [return to your Advent calendar](/2017) and
+try another puzzle.
+
+If you still want to see it, you can [get your puzzle
 input](10/input).

2017/10/solution.py

@@ -1,13 +1,23 @@
 #!/bin/python3
 import sys,re
 from pprint import pprint
+from functools import reduce
+from operator import xor
 
 input_f = 'input'
 
 def list2int(x):
     return list(map(int, x))
 
-part = 1
+def toACSII(x):
+    for idx,i in enumerate(x):
+        x[idx] = ord(i)
+    return x
+
+def XOR(x):
+    return reduce(xor, map(int, t))
+
+part = 2
 #########################################
 #                                       #
 #              Part 1                   #
@@ -46,4 +56,42 @@ if part == 1:
 #                                       #
 #########################################
 if part == 2:
-    exit()
+
+    size = 256
+    lengths = []
+    skip = 0
+    numbers = []
+    pos = 0
+    for i in range(0,size):
+        numbers.append(i)
+
+
+    with open(input_f) as file:
+        for line in file:
+            lengths = list(line.rsplit()[0].split()[0])
+            lengths = toACSII(lengths) + [17, 31, 73, 47, 23]
+            print(lengths)
+    
+    for i in range(0,64):
+        for ldx, length in enumerate(lengths):
+            sub = [numbers[(pos + i) % len(numbers)] for i in range(length)]
+            rev = sub[::-1]
+
+            for i in range(length):
+                numbers[(pos + i) % len(numbers)] = rev[i]
+
+            pos += (length+skip) 
+            pos = pos % len(numbers)
+            skip += 1
+    print(numbers)
+
+    dense = []
+
+    for i in range(0,16):
+        t = numbers[i*16:(i*16)+16]
+        dense.append(XOR(t))
+
+
+    for i in dense:
+        print(format(i, '02x'),end='')
+    print()

2017/10/test2

@@ -0,0 +1 @@
+1,2,3

2017/10/test3

@@ -0,0 +1 @@
+1,2,4