q2.py

@@ -1,49 +0,0 @@
-def q1(text: str):
-    levels = text.splitlines()
-
-    count = 0
-    for level in levels:
-        curr = [int(l) for l in level.split()]
-
-        increasing = all(curr[i] < curr[i + 1] for i in range(len(curr) - 1))
-        decreasing = all(curr[i] > curr[i + 1] for i in range(len(curr) - 1))
-        diff_criterion = all(
-            1 <= abs(curr[i] - curr[i + 1]) <= 3 for i in range(len(curr) - 1)
-        )
-
-        count += 1 if diff_criterion and (increasing or decreasing) else 0
-
-    return count
-
-
-def q2(text: str):
-    levels = text.splitlines()
-
-    count = 0
-    for level in levels:
-        curr = [int(l) for l in level.split()]
-
-        for i in range(len(curr) + 1):
-            curr_i = curr.copy()
-            if i < len(curr):
-                del curr_i[i]
-
-            increasing = all(curr_i[i] < curr_i[i + 1] for i in range(len(curr_i) - 1))
-            decreasing = all(curr_i[i] > curr_i[i + 1] for i in range(len(curr_i) - 1))
-            diff_criterion = all(
-                1 <= abs(curr_i[i] - curr_i[i + 1]) <= 3 for i in range(len(curr_i) - 1)
-            )
-
-            if diff_criterion and (increasing or decreasing):
-                count += 1
-                break
-
-    return count
-
-
-if __name__ == "__main__":
-    with open("i2.txt") as f:
-        text = f.read()
-
-    print(q1(text))
-    print(q2(text))

q3.py

@@ -1,33 +0,0 @@
-import re
-
-MUL_PATTERN = re.compile(r"mul\((\d+), *(\d+)\)")
-def task1(text: str) -> int:
-    total = 0
-    for mul in MUL_PATTERN.finditer(text):
-        a, b = map(int, mul.groups())
-        total += a*b
-    return total
-
-MUL_OR_DO_PATTERN = re.compile(r"do\(\)|don't\(\)|mul\((\d+), *(\d+)\)")
-def task2(text: str) -> int:
-    total = 0
-    on = True
-    for op in MUL_OR_DO_PATTERN.finditer(text):
-        if op.group(0) == "do()":
-            on = True
-        if op.group(0) == "don't()":
-            on = False
-        if op.group(1) and on:
-            a, b = map(int, op.groups())
-            total += a*b
-    return total
-
-def main():
-    with open("i3.txt") as f:
-        text = f.read()
-
-    print(task1(text))
-    print(task2(text))
-
-if __name__ == "__main__":
-    main()

q4.py

@@ -1,79 +0,0 @@
-from typing import Iterable
-
-WORD = "XMAS"
-def words_from_grid(grid, startx, starty) -> Iterable[str]:
-    num_rows = len(grid)
-    num_cols = len(grid[0])
-
-    for (dx, dy) in (
-        (1, 0), (-1, 0),
-        (0, 1), (0, -1),
-        (1, 1), (-1, 1),
-        (1, -1), (-1, -1)
-    ):
-        x = startx
-        y = starty
-        word = ""
-        for i in range(len(WORD)):
-            if x >= num_cols or x < 0:
-                continue
-            if y >= num_rows or y < 0:
-                continue
-
-            word += grid[y][x]
-            x += dx
-            y += dy
-
-        yield word
-
-def cross_words_from_grid(grid, startx, starty) -> tuple[str, str]:
-    num_rows = len(grid)
-    num_cols = len(grid[0])
-
-    output = []
-    for (dx, dy) in (
-        (1, 1), (1, -1)
-    ):
-        x = startx - dx
-        y = starty - dy
-        word = ""
-        for _ in range(3):
-            if x >= num_cols or x < 0:
-                continue
-            if y >= num_rows or y < 0:
-                continue
-
-            word += grid[y][x]
-            x += dx
-            y += dy
-        output.append(word)
-    # o: tuple[str, str] = 
-    return tuple(output)
-
-def task1(grid: list[str]) -> int:
-    count = 0
-    for y in range(len(grid)):
-        for x in range(len(grid[0])):
-            for word in words_from_grid(grid, x, y):
-                if word == WORD or word == str(reversed(WORD)):
-                    count += 1
-    return count
-
-def task2(grid: list[str]) -> int:
-    count = 0
-    for y in range(len(grid)):
-        for x in range(len(grid[0])):
-            leading, anti = cross_words_from_grid(grid, x, y)
-            if (leading == "MAS" or leading == "SAM") and (anti == "MAS" or anti == "SAM"):
-                count += 1
-    return count
-
-# I can't believe I got both parts first try... this should've been a very error-prone episode!
-def main():
-    with open("i4.txt") as f:
-        text = f.read().splitlines()
-    print(task1(text))
-    print(task2(text))
-
-if __name__ == "__main__":
-    main()