Consecutive Characters (E)

题目

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.

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题意

计算给定字符串中最长连续相同字符的长度。

思路

一次遍历。

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代码实现

Java

class Solution {
    public int maxPower(String s) {
        int ans = 0;
        int count = 0;
        for (int i = 0; i < s.length(); i++) {
            if (i > 0 && s.charAt(i) == s.charAt(i - 1)) {
                count++;
            } else {
                ans = Math.max(ans, count);
                count = 1;
            }
        }
        ans = Math.max(ans, count);
        return ans;
    }
}