function?rv=drnd（xp）
%?discrete?random?variable
%?Input:
%??????[xp]:?distribution
%?Output:
%??????rv:?
%---------------------------------
%?Principle:?P（xi=x（i））=P（r:[Fi-1Fi））（F0=0）
%??????????????????????=Pi;
%?Attention:?sum（p）=1
%---------------------------------
%?Date:?15-Nov-2010
%?Designer:?William?Song

l=size（x2）;
???
if?p==0
????p=ones（1l）/l;????%?uniform?distribution
elseif?sum（p）~=1
????p=p/sum（p）;
end

F=cumsum（p）;F0=[0F（1:end-1）];
r=rand（1）;
rv=x（:（F0<=r）&（r

?屬性????????????大小?????日期????時間???名稱
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?????文件???????1761??2010-11-16?16:37??Qlearning.m

?????文件????????325??2010-11-16?16:52??ReadMe.txt

?????文件????????445??2010-11-16?16:43??QDemo.m

?????文件????????516??2010-11-15?22:10??drnd.m

-----------?---------??----------?-----??----

?????????????????3047????????????????????4