Arnold Martinez arnoldmartinez

## Calculator.java
package demo;

public interface Calculator {
    boolean calculateLeapYear(int year);
}

## Algorithm.java
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

import javax.xml.bind.DatatypeConverter;

/**
 * @author ARNOLD
 *
 */
public class Algorithm {
	package demo;

	public interface Calculator {
	boolean calculateLeapYear(int year);
	}
	import java.security.MessageDigest;
	import java.security.NoSuchAlgorithmException;

	import javax.xml.bind.DatatypeConverter;

	/**
	* @author ARNOLD
	*
	*/
	public class Algorithm {