来源:https://leetcode-cn.com/problems/palindromic-substrings/思路:双层循环,逐一匹配折字符串里的元素,如果相等则是回文,不相等则继续匹配。AC代码:public int countSubstrings(String s) {int res = 0; int n = s.length(); // boolea[i][j
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