Problem:
Score : 200 points

Problem Statement

Find the number of palindromic numbers among the integers between A and B (inclusive).
Here, a palindromic number is a positive integer whose string representation in base 10 (without leading zeros) reads the same forward and backward.

Constraints

10000 \leq A \leq B \leq 99999

All input values are integers.

Input

Input is given from Standard Input in the following format:

A B

Output

Print the number of palindromic numbers among the integers between A and B (inclusive).

Sample Input 1

11009 11332

Sample Output 1

4

There are four integers that satisfy the conditions: 11011, 11111, 11211 and 11311.

Sample Input 2

31415 92653

Sample Output 2

612

Solution in Java8 (OpenJDK 1.8.0) (judge verdict: Wrong Answer)

import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
    
		// 文字列の入力
		int a = sc.nextInt();
        int b = sc.nextInt();
        int ans = 0;
       
        for(int i = a; i <= b; i++) {
          String value = "" + i;
          int size = (int)Math.floor(value.length() / 2);
          if (value.substring(0, size).equals(value.substring(value.length() - size, value.length()))) {
            ans++;
          }
        }        
    
		// 出力
		System.out.println(ans);
	}
}