【問題描述】
設計一個利用哈夫曼算法的編碼和譯碼系統，重復地顯示并處理以下項目，直到選擇退出為止。
【基本要求】
(1)初始化：鍵盤輸入字符集大小n、n個字符和n個權值，建立哈夫曼樹；
(2)編碼：利用建好的哈夫曼樹生成哈夫曼編碼；
(3)輸出編碼；
(4)設字符集及頻度如下表：
字符：A B C D E F
頻度：4 9 23 2 17 15
字符：G H I J K
頻度：1 2 3 3 4
Measuring Frequency Content in
Signals
I this section we will study some non parametric methods for spectrum estimation
of a stochastic process. These methods are described in the literature.
All methods are based on the Periodogram which is defined for a sequence x[n]
with length N according to
ellipse detection using the hough transform 作者 H.K. Yuen, J. Illingworth and J. Kittler
Department of Electronics and Electrical Engineering
University of Surrey, Guildford。對霍夫變換檢測檢測橢圓的原理有一定的參考意義。
