MATLAB: How to take variable number of input strings in a function and return the concatenated output string

basic matlabmatlab stringstrings

I have to write a function that takes variable number of inputs (even no input is allowed) and returns a concatenate string as the output.

Example: x1 = 'my'; x2= ' '; x3= 'holiday'; x4= ' '; x5= 'is'; x6= ' almost over!'; for all 6 input strings output would be= 'my holiday is almost over!';

if no input was passed, output should be empty

Best Answer

function out = myjoin(varargin);
out = sprintf(' %s',varargin{:});
out = out(2:end);
end

And tested:

>> myjoin()
ans =
>> myjoin('hello','world')
ans = hello world

Related Solutions

MATLAB: Undefined function ‘cell2str’ for input arguments of type ‘cell’.

There is no command cell2str in core MATLAB.

MATLAB: What other command can I use instead of isempty

if ~isempty(strfind(B, A))
    condition 1
else
    condition 2
end

The problem is that, even conceptually, this does not express what you actually want, so it's no wonder it does not work.

You're not asking if A is found in B (in which case, using isempty(strfind(...)) would work). You want to ask either (it's not clear from your question) if A is found in all of the Bs, or in any of the Bs. That's a completely different question, hence the syntax is different.

strfind when given a cell array tells you, for each element of B, this is where I found A. Therefore, you have to ask strfind: for each element of B is the return value empty. And finally, you have to apply the any or all operator (depending on what you want) to that answer. So:

if any(~cellfun(@isempty, strfind(B, A)))  %possibly replace any by all
   condition1
else
   condition2
end

Best Answer

Related Solutions

MATLAB: Undefined function ‘cell2str’ for input arguments of type ‘cell’.

MATLAB: What other command can I use instead of isempty

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