vigvec.m

来自「vigenere密码解密的matlab实现」· M 代码 · 共 8 行

function y=vigvec(txt,m,n)
% This function gives the frequencies of the letters a through z that
%  occur in positions congruent to n (mod m) in the text string txt.

x=choose(txt,m,n);
yct=frequency(x);

y=yct/sum(yct);