E) how many keys does the triple DES algorithm use?  F) In triple DES, the key size is _____ and meeting the middle attack takes _____ tests to break the key.

Can you explain this procedure for me?

java question 32. need help thank u

/**     * Removes the specified key and its associated value from this symbol table          * (if the key is in this symbol table).  Takes advantage of the fact that the     * keys appear in increasing order to terminate` early when possible.      *     * @param  key the key     * @throws IllegalArgumentException if {@code key} is {@code null}     */    public void delete(Key key) {        // TODO        // Change this code to make use of the fact that the list is sorted to        //     terminate early when possible.        // As this code already uses recursion, the private helper function is        // already present below, but it will need to be changed to terminate        // early when appropriate.        if (key == null) throw new IllegalArgumentException("argument to delete() is null");         first = delete(first, key);    }     // delete key in linked list beginning at Node x    // warning: function call stack too large if table is large    private Node delete(Node x, Key…