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腾讯&leetcode647:回文子串 #107

Description

@sisterAn

给定一个字符串,你的任务是计算这个字符串中有多少个回文子串。

具有不同开始位置或结束位置的子串,即使是由相同的字符组成,也会被视作不同的子串。

示例 1:

输入:"abc"
输出:3
解释:三个回文子串: "a", "b", "c"

示例 2:

输入:"aaa"
输出:6
解释:6个回文子串: "a", "a", "a", "aa", "aa", "aaa"

提示:

  • 输入的字符串长度不会超过 1000 。

附赠leetcode地址:leetcode

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