3.cpp

/*

Consecutive Characters
----------------------

Given a string s, the power of the string is the maximum length of a non-empty substring that contains only one unique character.

Return the power of the string.

 

Example 1:

Input: s = "leetcode"
Output: 2
Explanation: The substring "ee" is of length 2 with the character 'e' only.
Example 2:

Input: s = "abbcccddddeeeeedcba"
Output: 5
Explanation: The substring "eeeee" is of length 5 with the character 'e' only.
Example 3:

Input: s = "triplepillooooow"
Output: 5
Example 4:

Input: s = "hooraaaaaaaaaaay"
Output: 11
Example 5:

Input: s = "tourist"
Output: 1
 

Constraints:

1 <= s.length <= 500
s contains only lowercase English letters.

*/

class Solution {
public:
    int maxPower(string s) {
        int ans = 1, current_count = 1;
        for(int i=1; i<s.size(); i++) {
            if(s[i] == s[i-1]) {
                current_count++;
                ans = max(ans, current_count);
            } else {
                ans = max(ans, current_count);
                current_count = 1;
            }
        }
        return ans;
    }
};