maximum consecutive repeating character

max_consec_repeating_char.py

"""
Test:
Write a program that finds maximum consecutive repeating character in a string.
Given string: “aaabbbbbcddeeefff”.
Output of the program must return the character and the length of its biggest repeating sequence.
Output example:
Character: p
Length of the sequence: 8
"""


def result_output(key, value):
    """ Outputs the excercise results with the requested format
    """
    result_format = """Character: {}
Length of the sequence: {}
    """
    return result_format.format(key, value)



def biggest_repeating_sequence(input_string):
    """ Given a string return the maximum consecutive repeating
    character in the string.
    """
    max_values = (None, 0)
    tmp = (None, 0)
    for char in input_string:
        # Update tmp (increase the counter)
        # or set the new char and sets the counter to 1
        tmp = (char, 1) if char != tmp[0] else (char, tmp[1]+1)

        # Update max_values in case
        # the current value of tmp is greater than the max_value
        
        # Greater than will return the first biggest repeating sequence
        #  greater than equals will return the last biggest repeating sequence 
        if tmp[1] > max_values[1]:
            max_values = char, tmp[1]
    return max_values



def main():
    samples = [
        "aaabbbbbcddeeefff",
        "a",
        "",
        "aaaabbbb",
        "aaabb",
        "aabbb",
        "abbcccdddd",
        "ddddcccbba"
        "ddddcccbbaeeeeeffggg"
    ]
    for sample in samples:
        print("Input: ", sample)
        res = biggest_repeating_sequence(sample)

        print("Result: ", res)
        print(result_output(*res))


if __name__ == "__main__":
    main()