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: Accepted)

import java.util.*;
import java.util.Collections;
import java.util.stream.Collectors;

public class Main {

  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int A = sc.nextInt();
    int B = sc.nextInt();
    int cnt = 0;
    for (int i = A; i <= B; i++) {
      String C = String.valueOf(i);
      String D = C.substring(0, 1);
      String E = C.substring(C.length() - 1, C.length());
      String F = C.substring(1, 2);
      String G = C.substring(C.length() - 2, C.length() - 1);
      if (D.equals(E) && F.equals(G)) {
        cnt++;
      }
    }
    System.out.println(cnt);
  }
}