days six and seven

day06/day06.py

@@ -0,0 +1,26 @@
+import re
+import argparse
+
+parser = argparse.ArgumentParser()
+parser.add_argument("filename", help="the file from which to take data")
+args = parser.parse_args()
+
+with open(args.filename, "r") as f: contents = f.read()
+
+buffer = contents[:4]
+for (i, s) in enumerate(contents[3:]):
+	buffer = buffer[1:] + s
+
+	print(buffer)
+	if len(set(buffer)) == 4:
+		print(i+4)
+		break
+
+buffer = contents[:14]
+for (i, s) in enumerate(contents[13:]):
+	buffer = buffer[1:] + s
+
+	print(buffer)
+	if len(set(buffer)) == 14:
+		print(i+14)
+		break

day07/day07.py

@@ -0,0 +1,81 @@
+import re
+import argparse
+
+parser = argparse.ArgumentParser()
+parser.add_argument("filename", help="the file from which to take data")
+args = parser.parse_args()
+
+with open(args.filename, "r") as f: contents = f.read()
+
+root = {"/": {}}
+pwd = ["/"]
+
+for command in contents.split("$"):
+	command = command.strip()
+	current_directory = root
+	for directory in pwd:
+		current_directory = current_directory[directory]
+	
+	if command.startswith("cd"):
+		if "cd /" in command:
+			pwd = ["/"]
+		elif ".." in command:
+			pwd.pop()
+		else: 
+			pwd.append(command.split()[1])
+			print("moved. now our location is {}", pwd)
+	if command.startswith("ls"):
+		for line in command.split("\n"):
+			if line == "ls":
+				continue
+			else:
+				line = line.split()
+				if line[0] == "dir":
+					if line[1] not in current_directory:
+						current_directory[line[1]] = {}
+				else:
+					current_directory[line[1]] = int(line[0])
+				# add to the directory listing
+				pass
+	print("a command: {}".format(command))
+
+def size_of_listing(path):
+	it = root
+	for i in path: it = it[i]
+	if isinstance(it, dict):
+		s = 0
+		for k, v in it.items():
+			s += size_of_listing(path + [k])
+		return s
+	return it
+
+def all_of_it(path, d):
+	for k, v in d.items():
+		if isinstance(v, dict):
+			yield from all_of_it(path + [k], v)
+			yield path + [k], size_of_listing(path + [k])
+
+total_space = 70000000
+total_needed = 30000000
+space_used = size_of_listing(["/"])
+free_space = total_space-space_used
+required = total_needed - free_space
+
+s=0
+for path, size in sorted(list(all_of_it(["/"], root["/"])), key=lambda x: x[1]):
+	print("{} with size {}".format(path, size))
+	if size < 100000:
+		s += size
+print("total less than 100,000 is {}".format(s))
+for path, size in filter(
+					lambda x: x[1] > required,
+					sorted(
+						list(
+							all_of_it(["/"], root["/"])
+							), 
+						key=lambda x: x[1]
+						)
+					):
+	print("{} with size {}".format(path, size))
+
+