Day 4 completed

+ refactored day 1 to 3 with black -l 119

day2/part1.py

@@ -1,20 +1,24 @@
 #!/usr/bin/env python3.11
 import re
-maximums = { 'red': 12, 'green': 13, 'blue': 14}
+
+maximums = {"red": 12, "green": 13, "blue": 14}
+
+
 def game_turn(game_id: int, data: str) -> int:
-    sets = data.split('; ')
+    sets = data.split("; ")
     for dset in sets:
-        cubes = dset.split(', ')
+        cubes = dset.split(", ")
         for cube in cubes:
-            print(cube.split(' '))
+            print(cube.split(" "))
-            number, color = cube.split(' ')
+            number, color = cube.split(" ")
             number = int(number)
             if number > maximums[color]:
                 return 0
     return game_id
 
+
 id_sum = 0
-with open('input.txt', 'r') as input:
+with open("input.txt", "r") as input:
     while line := input.readline():
         match = re.match("Game (\d+): (.*)", line)
         id_sum += game_turn(int(match.groups(0)[0]), match.groups(0)[1])

day2/part2.py

@@ -1,25 +1,24 @@
 #!/usr/bin/env python3.11
 import re
 
-maximums = { 'red': 12, 'green': 13, 'blue': 14}
+maximums = {"red": 12, "green": 13, "blue": 14}
+
+
 def game_turn(game_id: int, data: str) -> int:
-    local_maximums = {
+    local_maximums = {"red": 0, "green": 0, "blue": 0}
-        'red': 0,
+    sets = data.split("; ")
-        'green': 0,
-        'blue': 0
-    }
-    sets = data.split('; ')
     for dset in sets:
-        cubes = dset.split(', ')
+        cubes = dset.split(", ")
         for cube in cubes:
-            print(cube.split(' '))
+            print(cube.split(" "))
-            number, color = cube.split(' ')
+            number, color = cube.split(" ")
             number = int(number)
             local_maximums[color] = max(local_maximums[color], number)
-    return local_maximums['red'] * local_maximums['green'] * local_maximums['blue']
+    return local_maximums["red"] * local_maximums["green"] * local_maximums["blue"]
+
 
 id_sum = 0
-with open('input.txt', 'r') as input:
+with open("input.txt", "r") as input:
     while line := input.readline():
         match = re.match("Game (\d+): (.*)", line)
         id_sum += game_turn(int(match.groups(0)[0]), match.groups(0)[1])

day4/example_input.txt

@@ -0,0 +1,6 @@
+Card 1: 41 48 83 86 17 | 83 86  6 31 17  9 48 53
+Card 2: 13 32 20 16 61 | 61 30 68 82 17 32 24 19
+Card 3:  1 21 53 59 44 | 69 82 63 72 16 21 14  1
+Card 4: 41 92 73 84 69 | 59 84 76 51 58  5 54 83
+Card 5: 87 83 26 28 32 | 88 30 70 12 93 22 82 36
+Card 6: 31 18 13 56 72 | 74 77 10 23 35 67 36 11

day4/part1.py

@@ -0,0 +1,27 @@
+#!/usr/bin/env python3.11
+import re
+
+input_file = "input.txt"
+sum = 0
+with open(input_file) as input:
+    while line := input.readline():
+        if match := re.match("Card +(\d+): (.*) \| (.*)", line):
+            winning_numbers = list(map(int, re.split(" +", match.group(2).lstrip(" "))))
+            numbers = map(int, re.split(" +", match.group(3).lstrip(" ")))
+            # print(match.group(1), winning_numbers, numbers)
+            points = 0
+            # print(winning_numbers, end="; ")
+            for number in numbers:
+                # print(number, end=",")
+                if number in winning_numbers:
+                    # print("is winning", end="; ")
+                    if points == 0:
+                        points = 1
+                    else:
+                        points *= 2
+                else:
+                    # print("is not winning", end="; ")
+                    pass
+            # print("\n", points)
+            sum += points
+print(sum)

day4/part2.py

@@ -0,0 +1,38 @@
+#!/usr/bin/env python3.11
+import re
+from dataclasses import dataclass
+
+input_file = "input.txt"
+
+
+@dataclass
+class Card:
+    winning_numbers: list[int]
+    numbers: list[int]
+    copies: int
+
+    def __hash__(self):
+        return (self.copies, self.winning_numbers, self.numbers).__hash__()
+
+
+with open(input_file) as input:
+    raw_cards = input.readlines()
+
+cards = [Card(winning_numbers=[], numbers=[], copies=1) for i in range(len(raw_cards))]
+
+for line in raw_cards:
+    if match := re.match("Card +(\d+): (.*) \| (.*)", line):
+        card_no = int(match.group(1)) - 1
+        cards[card_no].winning_numbers = list(map(int, re.split(" +", match.group(2).lstrip(" "))))
+        cards[card_no].numbers = map(int, re.split(" +", match.group(3).lstrip(" ")))
+        next_no = card_no + 1
+        for number in cards[card_no].numbers:
+            if number in cards[card_no].winning_numbers:
+                if len(cards) > next_no - 1:
+                    cards[next_no].copies += cards[card_no].copies
+                    next_no += 1
+
+the_sum = sum(map(lambda c: c.copies, cards))
+
+
+print(the_sum)