rjvitorino

from typing import Union


def squares(n: int) -> Union[int, None]:
    """
    Calculate the sum of all squared positive integers from 1 to n, inclusive.

    Args:
        n (int): A positive integer.

rjvitorino

from collections import defaultdict
from typing import List, Set


def find_unused(lines: List[str]) -> List[str]:
    """
    Identify variables that are assigned but never used.

    Examples:
    ```find_unused(["a = 1", "b = a", "c = 2", "log(b)"])    # ["c"]```

rjvitorino

from collections import defaultdict
from typing import Dict, List


class LogEntry:
    """
    Represents a log entry for a function call.

    Attributes:
        name (str): The name of the function.

rjvitorino

from typing import Set


def equal_letters_digits(s: str) -> str:
    """
    Finds the longest substring in the input string `s` where the number of distinct letters equals the number of distinct digits.
    If there are multiple substrings with the same length, return the one that appears first.

    :param s: The input string containing letters and digits.
    :return: The longest valid substring according to the conditions, or an empty string if no such substring exists.

rjvitorino

from collections import defaultdict
from typing import List


def max_pairs(shoes: List[str]) -> int:
    """
    Calculate the maximum number of matching pairs of shoes that can be formed.

    :param shoes: A list of strings where each string represents a shoe with
                  its type ('L' for left or 'R' for right) and its size.

rjvitorino

from typing import List


def min_rows(groups: List[int], row_size: int) -> int:
    """
    Calculate the minimum number of rows required to seat all groups
    without splitting them across rows.

    :param groups: List of integers where each integer represents a group size.
    :param row_size: Integer representing the maximum number of people that can sit in a row.

rjvitorino

def ways_to_score(total_points: int) -> int:
    """
    Calculate the number of unique ways in American Football 🏈 to score exactly total_points
    using combinations of touchdowns (6 points), field goals (3 points), and safeties (2 points).

    :param total_points: An integer representing the total points to score.
    :return: The number of unique ways to score exactly total_points.
    """

    # ways[i] will hold the number of ways to score exactly i points.

rjvitorino

from collections import defaultdict
from typing import List, Tuple

# Define the type alias for better readability (colour and fabric tuple)
ClothingItem = Tuple[str, str]


def min_laundry_loads(items: List[ClothingItem]) -> int:
    """
    This function takes a list of clothing items, each represented by a tuple

rjvitorino

from typing import List, Optional


class StringSplitter:
    @staticmethod
    def split(string: str, delimiter: Optional[str] = None) -> List[str]:
        """
        Splits the input string by the specified delimiter.

        Args:

rjvitorino

from collections import Counter
from dataclasses import dataclass
from datetime import datetime, timedelta
from typing import List


@dataclass
class Ingredient:
    """
    Class to represent an ingredient and its expiration date.