how to find the most used letters in a text?

I have a notepad file eith a literary text and i need to find the most used letters . How many times theey appear in that text.

Answer 1

[Cris LaPierre]

See this answer: https://www.mathworks.com/matlabcentral/answers/454036-count-letters-in-a-large-text-txt?s_tid=srchtitle

Answer 2

[Alexander]

Try "help fread" and have a look on the examples. But anyway, this might help:

fid = fopen("PutYourTextInHere.txt", 'r');

c = fread(fid, inf, 'uint8')';

for (m = 48:126) % I think this is enough, but you can widen it to 1:255, I think

Chars(m) = length(find(c == m));

end

CharsInText = find(Chars > 0);

for n = 1: length(CharsInText)

fprintf('Character = %s exists %i times\n', char(CharsInText(n)), Chars(CharsInText(n)))

end

fclose(fid);