LeetCode_贪心算法_简单_409.最长回文串

星许辰发布时间：2022-09-19 16:30:01 ，浏览量：2

1.题目
2.思路
3.代码实现（Java）

1.题目

给定一个包含大写字母和小写字母的字符串 s ，返回通过这些字母构造成的最长的回文串。

在构造过程中，请注意区分大小写。比如 “Aa” 不能当做一个回文字符串。

示例 1：输入：s = “abccccdd” 输出：7 解释：我们可以构造的最长的回文串是"dccaccd"，它的长度是 7。

示例 2：输入：s = “a” 输入：1

提示： 1

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