MATLAB: Trying to sort a text document by alphabetical order and count how many times a word appears

sortingtext file

Hello,
I am trying to take a .txt file, import it, and then count how many times a word appears and then how sort all the words in order.
I want to take the .txt file, make it into a string, chop the string up into individual words, and then put the words into a matrix along with there word count.
Take the following sentance as an example, "The cat is a cat and would like to have a cat."
The output would look like the following:
word:a                    count:2    
word:and                  count:1
word:cat                  count:3
word:have                 count:1
word:like                 count:1  
word:the                  count:1 
word:to                   count:1
word:would                count:1
Here is what I have right now.
fid = fopen('Theodore_Roosevelt_The_Duties_Of_American_Citizenship.txt'); 
Line = fgetl(fid); 
textfile = strings(1,1); 
k = 1; 
while ischar(Line) textfile(k,1) = Line; 
    Line = fgetl(fid); 
    k = k+1; 
end 
fclose(fid); 
 %removing all nonAlpha characters from the text file 
punc = [".",";",",","(",")","--","-",]; 
textfile = replace(textfile,punc," "); 
textfile=lower(textfile); 
%for loop is used to split string 'textFile' into individula words 
words = strings(0); 
for i = 1:length(textfile) 
    words = [words;split(textfile(i))]; 
end 
k=convertStringsToChars(words); 
h=1;
F=2;
G=1;
sorted=zeros(1);
for j = 1:length(k)  
        T=strncmp(k(h),k(F),1); 
        if T==1 
        %if true, put h word in sorted before word F 
        sorted=sorted(k(h),G); 
        G=G+1; 
        sorted=sorted(k(F),G); 
        end 
    h=h+2; 
    F=F+2; 
end 
disp(sorted)
This is the error I get when executing the code:
Error using sort
Input argument must be a cell array
of character vectors.
Error in sorted (line 28)
[ignored,index] =
sort([meshsites(:).' sites(:).']);
Error in fgetltest (line 35)
sorted=sorted(k(h),G);
This is for a homework question, but I am lost about this matrix part I want to put it in.

Best Answer

Here's a different approach. See inline comments for details. 
% Read text
C = fileread('Theodore_Roosevelt_The_Duties_Of_American_Citizenship.txt'); 
% Split into words by spaces
words = strsplit(strtrim(C)); 
% Remove problematic characters
% But be careful: this removes any non-letter from each word. 
% cat's turns into cats; But without this "cats" with quotes 
% or cats! will not be recognized.  If that's a problem you'll
% need to use a regular expression approach. 
words = cellfun(@(x)x(isletter(x)), words, 'UniformOutput', false);
% make all letters lower case 
words = lower(words); 
% sort them into alphabetical order
words = sort(words); 
% Count frequency of each word
wordList = unique(words); 
wordCount = histcounts(categorical(words), categorical(wordList)); 
% Output table
T = table(wordList(:), wordCount(:), 'VariableNames', {'Word', 'Count'});
Related Question