how to join 3 strings into single string?

I have a cell array [1*3 cell] Example Tcgh A6 1214 and i want to join them by put '-' in between and get Tcgh-A6-1214

i tried strcat and strjoin but doesn't work with me! Thanks

Answer 1

[Stephen23]

No ugly and inefficient loop is required:

>> C = {'Tcgh','A6','1214'};
>> out = sprintf('-%s',C{:});
>> out(2:end)
ans =
Tcgh-A6-1214

[chocho]

@Stephen Cobeldick hi bro Stephen I really Appreciate your help

But my inputs are in cell array contain cell array so i got the folowing error :

Error using sprintf

Function is not defined for 'cell' inputs.

could you check the inputs I posted on 'cat.png'

[Stephen23]

@chocho: I am happy to help you but I cannot load data from a screenshot. A screenshot is useless for giving me data. Do you want to me to waste my time by trying to replicate your data arrays? If you actually want help then please upload your data.

[chocho]

@Stephen Cobeldick ok sure

[Stephen23]

>> out = cellfun(@(c)sprintf('%s-%s-%s',c{:}),InterN,'Uni',0)
out = 
    'TCGA-A6-2677'
    'TCGA-AA-3516'
    'TCGA-AA-3520'
    'TCGA-AA-3521'
    'TCGA-AA-3522'
    'TCGA-AA-3524'
    'TCGA-AA-3525'
    'TCGA-AA-3527'
... etc

And look how quickly I could actually help you, once you gave your data. The more you help us, the easier we can help you.

[chocho]

Many Thanks @Stephen Cobeldick but i'm trying to avoid cellfun and prefer to use for loop for future use.

[chocho]

@Stephen Cobeldick yes, you helped me a lot Thank you sooooo much

Answer 2

[Nicolaie Popescu-Bodorin]

res = strCell{1};

for k=2:length(strCell),

 res=[res '-' strCell{k}];

end;

disp(res);

[Stephen23]

This expands the output res on each iteration, which is not efficient:

https://www.mathworks.com/help/matlab/matlab_prog/preallocating-arrays.html

See my answer for a simpler and more efficient solution that does not use a loop.