Method remove

lab07/src/Map61B.java:37–37

Removes the mapping for the specified key from this map if present, or null if there is no such mapping. Not required for Lab 7. If you don't implement this, throw an UnsupportedOperationException.

(K key)

     * Not required for Lab 7. If you don't implement this, throw an
     * UnsupportedOperationException. */
    V remove(K key);
}