main.py

def find_characters_different(data, n):
    for i in range(len(data) - n):
        if len(set(data[i : i + n])) == n:
            return i + n


def tests():
    assert (
        find_characters_different("mjqjpqmgbljsphdztnvjfqwrcgsmlb", 4) == 7
    ), "Should be 7"
    assert (
        find_characters_different("bvwbjplbgvbhsrlpgdmjqwftvncz", 4) == 5
    ), "Should be 5"
    assert (
        find_characters_different("nppdvjthqldpwncqszvftbrmjlhg", 4) == 6
    ), "Should be 6"
    assert (
        find_characters_different("nznrnfrfntjfmvfwmzdfjlvtqnbhcprsg", 4) == 10
    ), "Should be 10"
    assert (
        find_characters_different("zcfzfwzzqfrljwzlrfnpqdbhtmscgvjw", 4) == 11
    ), "Should be 11"

    assert (
        find_characters_different("mjqjpqmgbljsphdztnvjfqwrcgsmlb", 14) == 19
    ), "Should be 19"


if __name__ == "__main__":
    tests()
    x = open("../inputs/day06.txt", "r").read()
    print(find_characters_different(x, 4))
    print(find_characters_different(x, 14))