day03 solution

day03/solve.py

@@ -0,0 +1,53 @@
+# Day 03: Rucksack Reorganization
+
+import os
+
+def get_path():
+  return os.path.join(os.path.dirname(__file__), 'data.txt')
+
+def get_priority(item):
+  iitem = ord(item)
+  if iitem >= 65 and iitem <= 90: # between A-Z
+    return iitem - 38 # range 27 and 52
+  elif iitem >= 97 and iitem <= 122: # between a-z
+    return iitem - 96 # range between 1 and 26
+  else:
+    return 0
+
+def solve_part1():
+  total = 0
+
+  with open(get_path()) as fp:
+    for line in fp:
+      [first,second] = [line[:len(line)/2], line[len(line)/2:]]
+      for c in first:
+        if c in second:
+          total += get_priority(c)
+          break
+
+  print('GOAL: Find the item type that appears in both compartments of each rucksack.')
+  print('ANSWER: What is the sum of the priorities of those item types?')
+  print('Total: %d' % (total))
+
+def solve_part2():
+  group = 0
+  total = 0
+
+  with open(get_path()) as fp:
+    while True:
+      [first, second, third] = [fp.readline(), fp.readline(), fp.readline()]
+      if first == '':
+        break
+      group += 1
+      for c in first:
+        if c in second and c in third:
+          total += get_priority(c)
+          break
+
+  print('GOAL: Find the item type that corresponds to the badges of each three-Elf group.')
+  print('ANSWER: What is the sum of the priorities of those item types?')
+  print('Total: %d' % (total))
+
+if __name__ == '__main__':
+  solve_part1()
+  solve_part2()

day03/tests.py

@@ -0,0 +1,12 @@
+import unittest
+
+class Day03TestMethods(unittest.TestCase):
+  def setUp(self):
+    pass
+
+  # Does a thing
+  def test_true(self):
+    self.assertEqual(True, False)
+  
+if __name__ == '__main__':
+  unittest.main()

solve.py.template

@@ -1,9 +1,22 @@
 # Day #DAY#: #TITLE#
 
+import os
+
+def get_path():
+  return os.path.join(os.path.dirname(__file__), 'data.txt')
+
 def solve_part1():
-  print('hello')
+  total = 0
+
+  print('GOAL: #GOAL1#')
+  print('ANSWER: #ANSWER1#)
+  print('Total: %d' % (total))
 def solve_part2():
-  print('world')
+  total = 0
+  
+  print('GOAL: #GOAL2#')
+  print('ANSWER: #ANSWER2#)
+  print('Total: %d' % (total))
 
 if __name__ == '__main__':
   solve_part1()