Merge "Overriding toString method."

        final int index = (mTail == 0) ? mValues.length - 1 : mTail - 1;

        return mValues[index];

    }

    /**

     * {@inheritDoc}

     */

    @Override

    public String toString() {

        if (mSize <= 0) {

            return "{}";

        }

        final StringBuilder buffer = new StringBuilder(mSize * 64);

        buffer.append('{');

        buffer.append(get(0));

        for (int i = 1; i < mSize; i++) {

            buffer.append(", ");

            buffer.append(get(i));

        }

        buffer.append('}');

        return buffer.toString();

    }

}