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Challenges

Here is a list of extra tips and tricks to streamline your solution. If we have enough repositories listed, we'll call out some exceptional solutions as well.

BEAR IN MIND - there may be spoilers reading through this.

Day 1

  • Part 1 - Do you know the difference in Python between / and //?
  • Part 1 - Can you solve part one in just one expression (Hint: sum() and comprehensions are your friend.)
  • Part 2 - Can you solve the problem recursively?
  • Part 2 - Can you solve it without any if statements?

Day 2

  • Part 1 - OpCodes sound like a great Enum (maybe an IntEnum). You should go check out IntEnum.
  • Part 1 - Can you grab all three addresses of an instruction in one assignment?
  • Part 2 - Did you nest your for loops for noun and verb? Check out product() in the itertools library

Day 3

  • Part 1 - Intersections, eh? Maybe you want to check out set()
  • Part 1 - Did you know min() takes a key argument? Can you use that?
  • Part 2 - Consider tracking length with enumerate()

Day 4

  • Part 1 - Can you solve the problem using regular expressions and backreferences?
  • Part 1 - Can you solve the problem with groupby() from the itertools library?
  • Part 2 - Can you solve it with a regex? Do you know the difference betweene re.findall and re.finditer?

Day 5

  • Part 1 - ParameterMode looks like a great use of Flag or IntFlag
  • Part 2 - Can you refactor your computer out so it can be used for day 2 or day 5?

Day 6

  • Part 1 - Can you solve the problem recursively?
  • Part 2 - Can you solve the problem using Dijkstra's algorithm?

Day 7

  • Part 1 - Can you use permutations in the itertools library?
  • Part 2 - Can you solve the problem using Threads and Queues?

Day 8

  • Part 1 - Did you know about the count method on collections?
  • Part 2 - Were you able to zip anywhere?

Day 9

  • No challenges yet

Day 10

  • Part 1 - Do you know about defaultdict.
  • Part 2 - Do you know about atan2? How about cycle from itertools?

Day 11

  • Do you know about %. Can you write your turn and move without any if statements?

Day 12

  • This one is hard enough, do you really need another challenge?

Day 13

  • This is the second program that you need your computer to have different input and output functions. Can you generalize your computer to pass in different functions at construction time based on what input/output should be?

Day 14

  • Can you solve it with the Counter class from collections?

Day 15

  • No challenges yet