题解 | #最长回文子串#

import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner fzhinput = new Scanner(System.in);
        String zfc = fzhinput.nextLine();
        System.out.println(xzlongdc(zfc));
    }
    private static int xzlongdc(String zfc){
        int maxlength=0;
        for(int i=0;i<zfc.length();i++){
            for(int j=i;j<zfc.length();j++){
                if(sfdc(zfc,i,j)){
                    maxlength = Math.max(maxlength,j-i+1);
                }
            }
        }
        return maxlength;
    }
    private static boolean sfdc(String zfc, int l, int r){
        while(l<r){
            if(zfc.charAt(l)!=zfc.charAt(r)){
                return false;
            }
            l++;
            r--;
        }
        return true;
    }
    
}