zadanie-ciągi # 1.1

# 1.1


def if_arithmetic(array):
    difference = int(array[1]) - int(array[0])
    for index in range(len(array) - 1):
        if not (int(array[index + 1]) - int(array[index]) == difference):
            return False
    return True


def count_difference(array):
    return int(array[1]) - int(array[0])


how_many_arithmetic = 0
differences = []

with open("ciagi.txt") as file, open("wynik1.txt", "w") as result:
    lines = file.readlines()

    for line in lines:
        list_line = line.strip('\n').split(' ')

        if len(list_line) < 3:
            continue
        if if_arithmetic(list_line):
            how_many_arithmetic = how_many_arithmetic + 1
            differences.append(count_difference(list_line))

    result.write(f"In this file we have {how_many_arithmetic} arithmetic seq.\n")
    result.write(f"The max of diff: {max(differences)}")