How to concatenate an array of numbers without for loop

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JFz
JFz 2018-3-22
评论： JFz 2018-3-22
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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采纳的回答

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

更多回答（1 个）

Guillaume
Guillaume 2018-3-22
A = [1 2 3];
sprintf('(%s)', strjoin(compose('%d', A), ', '))
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Guillaume
Guillaume 2018-3-22
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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