【問題描述】
設(shè)計(jì)一個利用哈夫曼算法的編碼和譯碼系統(tǒng),重復(fù)地顯示并處理以下項(xiàng)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(quán)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(shè)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
進(jìn)程間通信14
說明了進(jìn)程控制原語并且觀察了如何調(diào)用多個進(jìn)程。但是這些進(jìn)程之間交換信息的
唯一方法是經(jīng)由f o r k或e x e c傳送打開文件,或通過文件系統(tǒng)。本章將說明進(jìn)程之間相互通信的
其他技術(shù)—I P C(InterProcess Communication)。
I was trying to develope a programme to make a slide show of all the pictures of a folder using vb.net. I have spent lot of time in net for searching this but all in vain, I didn t get a simple programme to solve the same and lastly I gave myself a try for the same and developed the code, I have used there a folderbrowserdialogue and a timer with a picture box control and in coding I have used IO name spaces to get the pathe and folder info here is the code.
Enjoy
Subhankar
課程設(shè)計(jì):
1.求出在一個n×n的棋盤上,放置n個不能互相捕捉的國際象棋“皇后”的所有布局。
2.設(shè)計(jì)一個利用哈夫曼算法的編碼和譯碼系統(tǒng),重復(fù)地顯示并處理以下項(xiàng)目,直到選擇退出為止。
【基本要求】
1) 將權(quán)值數(shù)據(jù)存放在數(shù)據(jù)文件(文件名為data.txt,位于執(zhí)行程序的當(dāng)前目錄中)
2) 分別采用動態(tài)和靜態(tài)存儲結(jié)構(gòu)
3) 初始化:鍵盤輸入字符集大小n、n個字符和n個權(quán)值,建立哈夫曼樹;
4) 編碼:利用建好的哈夫曼樹生成哈夫曼編碼;
5) 輸出編碼;
6) 設(shè)字符集及頻度如下表:
字符 空格 A B C D E F G H I J K L M
頻度 186 64 13 22 32 103 21 15 47 57 1 5 32 20
字符 N O P Q R S T U V W X Y Z
頻度 57 63 15 1 48 51 80 23 8 18 1 16 1