Task 1

gistfile1.txt

import java.lang.*;
import java.util.*;

public class RotateNumber {
  
  public static long rotateNumber(long number) {
    String a = number + "";
    a = a.charAt(a.length() - 1) + a.substring(0, a.length() - 1);
    return Long.parseLong(a);
  }
  
  public static boolean checkRotate(long number, int m) {
    return (number*m == rotateNumber(number));
  }
  
  public static void main(String[] args) {
    long i;
    int m = 10;
    long count = 0;
    long end = (long) Math.pow(10,m);
    for (i = 11; i < end; i++) {
      if (checkRotate(i,m)) {
        count++;
      }
    }
    System.out.println(count);
  }
}