www.gusucode.com > cryptography_matlab_codes > cryptography_matlab_codes/frequency.m
function yct = frequency(txt); % This function tabulates the amount of times each character 'a'-'z' % occurs in txt. ychar=zeros(26,1); yct=zeros(26,1); for k=0:25, ychar(k+1)=char('a'+k); v=(txt==ychar(k+1,1)); %perform check to see yct(k+1)=sum(v); ydisp=[ychar(k+1), ' ',num2str(yct(k+1))]; disp(ydisp); end;