consecutive_characters.py

"""
Consecutive characters

The cardinality of a string is the maximum length of a non-empty substring that contains exactly one unique character.

You need to return the cardinality of the string s.

Example 1:

Input: s = "meet"
Output: 2
Explanation: the substring "ee" of length 2 contains only the character "e".

Example 2:

Input: s = "abbcccddddeeeeedcba"
Output: 5
Explanation: the substring "eeeee" of length 5 contains only the character "e".

Limitations:

1 <= s.length <= 500
s consists of lowercase English letters only.
"""

from collections import Counter
from functools import reduce


class Solution:
    def max_power(self, s: str) -> int:
        counters_map = Counter(s)
        return reduce(max, counters_map.values())