package dict;

import java.lang.*;

/**
 * Represents a (key, value) pair stored in a dictionary,
 * where key is a Comparable.
 */
public class DictionaryPair implements Comparable {
    private Comparable _key;
    private Object _value;
    
    /**
     * Initializes this DictionaryPair to a given (key, value) pair.
     */
    public DictionaryPair(Comparable key, Object value) {
        _key   = key;
        _value = value;
    }
    
    /**
     * Compares the key of this DictionaryPair against the key of the
     * other DictionayPair.
     * @param other a DictionaryPair
     */
    public int compareTo(Object other) {
        return _key.compareTo(((DictionaryPair)other)._key);
    }
    
    /**
     * Returns the key of this DictionaryPair.
     */
    public Comparable getKey() {
        return _key;
    }
    
    /**
     * Returns the value of this DictionaryPair.
     */
    public Object getValue() {
        return _value;
    }
    
    /**
     * Shows "(", followed by the String representation of the key, followed by
     * a ",", followed by the String representation of the associcated value,
     * followed by a ")".
     */
    public String toString() {
        return "(" + _key + "," + _value + ")";
    }
}