题解 | 最长回文子串

import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        String str = in.nextLine();
        int maxLength = 0;
        for (int i = 0; i < str.length(); i++) {
            for(int j = i; j <= str.length(); j++) {
                if(j - i <= maxLength) {
                   continue;      
                }
                String left = str.substring(i, j);
                String right = new StringBuffer(left).reverse().toString();
                if(left.equals(right)) {
                    maxLength = j - i;
                }
            }
        }
        System.out.println(maxLength);
    }
}