How to concatenate an array of numbers without for loop

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JFz
JFz el 22 de Mzo. de 2018
Comentada: JFz el 22 de Mzo. de 2018
Hi, I have an array of integer numbers A = [1, 2, 3]. I would like to concatenate the numbers for use in SQL statement like '(1, 2, 3)'. How to do that without a for loop? Thanks.

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Stephen23
Stephen23 el 22 de Mzo. de 2018
>> A = [1,2,3];
>> str = sprintf(', %d',A);
>> str = sprintf('(%s)',str(3:end))
str = (1, 2, 3)

Más respuestas (1)

Guillaume
Guillaume el 22 de Mzo. de 2018
A = [1 2 3];
sprintf('(%s)', strjoin(compose('%d', A), ', '))
  3 comentarios
Guillaume
Guillaume el 22 de Mzo. de 2018
compose was introduced in version R2016b. (You should say in your question if you're several versions behind).
In earlier versions, you can replace compose by the undocumented sprintfc:
sprintf('(%s)', strjoin(sprintfc('%d', A), ', '));
Or use Stephen's method of using sprintf then removing the initial ', '.

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