public E get(int key) {
            int currentPos = locate( key );
            return isActive( currentPos ) ? array[ currentPos ].value : null;
        }
Find an item in the hash table.
@param key the item to search for.
@return the value of the matching item.
subs/gif-revert/src/main/java/com/engineer/gif/revert/lib/AnimatedGIFWriter.java