Advent of code 2017 solutions

day01_part01.py

captcha = """"""

def is_valid(captcha_to_solve):
    def validator(item):
        position, number = item
        return number == captcha_to_solve[position + 1]
    return validator

def solve(captcha_to_solve):
    return sum(
        map(
            lambda i: int(i[1]), 
            filter(is_valid(captcha_to_solve), enumerate(captcha_to_solve[:-1]))
        )
    )
  

print(solve(captcha + captcha[0]))

day01_part02.py

captcha = """"""

def is_valid(captcha_to_solve, padding):
    def validator(item):
        position, number = item
        return number == captcha_to_solve[position + padding]
    return validator

def solve(captcha_to_solve):
    length = int(len(captcha_to_solve) / 2)
    return sum(
        map(
            lambda i: int(i[1]), 
            filter(
                is_valid(captcha_to_solve, int(length / 2)),
                enumerate(captcha_to_solve[:length])
            )
        )
    )
  

print(solve(captcha * 2))

day02_part01.py

spreadsheet = """"""

spreadsheet = map(lambda r: list(map(int, r.split('\t'))), spreadsheet.split('\n'))

print(sum(map(lambda line: max(line) - min(line), spreadsheet)))

day02_part02.py

spreadsheet = """"""

spreadsheet = map(lambda r: list(map(int, r.split('\t'))), spreadsheet.split('\n'))

def number_evenly_divisible(row):
    def is_number_divisible(number):
        return len(list(filter(lambda row_number: number / row_number == number // row_number or row_number / number == row_number // number, row))) == 2
    return is_number_divisible

def get_evenly_divisibles(row):
    return list(filter(number_evenly_divisible(row), row))

print(sum(map(lambda line: max(line) / min(line), list(map(get_evenly_divisibles, spreadsheet)))))