leetcode

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1446. Consecutive Characters

题目

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

Given a string s, return the power of s.

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 consists of only lowercase English letters.

题目大意

给你一个字符串 s ，字符串的「能量」定义为：只包含一种字符的最长非空子字符串的长度。

请你返回字符串的能量。

解题思路

• 顺序遍历进行统计

代码

package leetcode

func maxPower(s string) int {
	cur, cnt, ans := s[0], 1, 1
	for i := 1; i < len(s); i++ {
		if cur == s[i] {
			cnt++
		} else {
			if cnt > ans {
				ans = cnt
			}
			cur = s[i]
			cnt = 1
		}
	}
	if cnt > ans {
		ans = cnt
	}
	return ans
}