题解 | #最长回文子串#

import java.util.*;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String str = sc.nextLine();
        int count = 1;
        for (int i = 0; i < str.length(); i++) {
            count=Math.max(count,getCount(str,count,i-1,i+1));
            count=Math.max(count,getCount(str,count,i,i+1));
        }
        System.out.println(count);
    }

    public static int getCount(String str, int count, int left, int right) {
        while (true) {
//懒狗用trycatch结构,报错就停止,不用想哪里越界惹
            try {
                if (str.charAt(left) == str.charAt(right)) {
                    count = Math.max(count, right - left+1);
                    left--;
                    right++;
                } else {
                    break;
                }
            } catch (Exception e) {
                break;
            }
        }
        return count;
    }
}