extendible hash

Therefore, we make an exhaustive research on traditional extendible Hash, and successfully structure a two-layer Hash model, which supports dynamic ADT dictionary, by combining the traditional Hash and the improved version.
於是，我們對傳統的可擴展Hash作了深入的研究，找到了對它進行改進的竅門，然後把改進版本與通常的Hash成功地搆成一個兩層Hash架搆，支持動態ADT字典。