How to display the differing elements in two string arrays in a loop?

Question

I have two string arrays - f and g. I want the program to print the members of g that do not exist in f.

I have the following code:

% <for ... >
  % <get `f` and `g` as inputs>
  ...
  x = 0;
  y = 0;
  while x < a
    while y < b
      w = string(f);
      z = string(g);
      tf = strcmp(w,z);
      for tf == 0 %         < < < < < Help needed with this
        fprintf('%s\n',z)
      end
      y = y+1;
    end
    x = x+1;
  end
% end

The result I get for tf looks like 1 0 0. What I want is for the fprintf to display the entries that correspond to 0's in z (to display the differing members of w and z), how do I do that?

Answer 1

Here is a small code showing how to accomplish that:

y = '12';
x = 'hello 123';

% First, check if the content of y is present in x
temp = contains(x, y);
if temp == 1 % x contains y
    disp ('x contains y');
else
   disp ('X does not contain y'); 

end

% Second, replace y characters with nothing.
% Result: Only characters not present in y will remain
% for more information type 'docs strrep'
temp2 =  strrep(x,y,'');
disp (['Characters of x not in y: ' temp2])

You will see:

x contains y

Characters of x not in y:hello 3