SelectMany for multiple arrays

Asked Aug 23 '16 at 15:05

Active Aug 23 '16 at 15:05

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I need to make all possible distinct strings, which are inserted array elements.

string[] arr1 = { "b", "c", "a"};
string[] arr2 = { "u", "o", "c"};
...
string[] arrN = { "f", "h", "k"};

After that, it turns out an array of strings (it is important to keep order of arrays):

bu...f; co...h; cu...k; ...

For a known amount of arrays I do so:

String[] str = arr1.SelectMany(
            i => arr2.SelectMany(
                k => arr3.Select(
                    l => string.Concat(i, k, l)))).ToArray();

How to do the same thing for an array of arrays?

asked Aug 23 '16 at 15:05

Maksim

It's not at all clear to me where the "distinct" part comes in... but basically you want to convert an array of arrays of strings to an array of strings, by sort of "pivoting"? Is each array the same size? – Jon Skeet Aug 23 '16 at 15:08
Show what you mean by array of arrays – paparazzo Aug 23 '16 at 15:09
See my answer to the duplicate question. – Eric Lippert Aug 23 '16 at 15:09

SelectMany for multiple arrays

0 Answers0