Problem_8.py

# Largest product in a series
# Problem 8
# https://projecteuler.net/problem=8

# The four adjacent digits in the 1000-digit number
# that have the greatest product are 9 × 9 × 8 × 9 = 5832.
# Find the thirteen adjacent digits in the 1000-digit number
#
# that have the greatest product. What is the value of this product?

# Answer:  23514624000


input_line: str = '''
73167176531330624919225119674426574742355349194934
96983520312774506326239578318016984801869478851843
85861560789112949495459501737958331952853208805511
12540698747158523863050715693290963295227443043557
66896648950445244523161731856403098711121722383113
62229893423380308135336276614282806444486645238749
30358907296290491560440772390713810515859307960866
70172427121883998797908792274921901699720888093776
65727333001053367881220235421809751254540594752243
52584907711670556013604839586446706324415722155397
53697817977846174064955149290862569321978468622482
83972241375657056057490261407972968652414535100474
82166370484403199890008895243450658541227588666881
16427171479924442928230863465674813919123162824586
17866458359124566529476545682848912883142607690042
24219022671055626321111109370544217506941658960408
07198403850962455444362981230987879927244284909188
84580156166097919133875499200524063689912560717606
05886116467109405077541002256983155200055935729725
71636269561882670428252483600823257530420752963450
'''

result: int = 1
quantity_numbers: int = 13

working_list: list = list(filter(lambda x: len(x) >= 13, input_line.replace('\n', '').split('0')))
print(working_list[:5])


def counter_of_13_numbers(string: str) -> int:
    count_1: int = 1
    for number in string:
        count_1 *= int(number)
    return count_1


for item in working_list:
    if len(item) == quantity_numbers:
        value_13_1 = counter_of_13_numbers(item)
        if value_13_1 > result:
            result = value_13_1
    else:
        for index in range(len(item) - quantity_numbers + 1):
            value_13_2 = counter_of_13_numbers(item[index:(index + quantity_numbers)])
            if value_13_2 > result:
                result = value_13_2

print('Answer: ', result)