C# Join Strings of two arrays

Question

I have two string arrays

array1 = { "test", "test", "test" }
array2 = { "completed", "completed", "completed" }

And I want to join the strings in the two arrays (they are always the same size) -> so I want to have one array which contains

array = { "test completed", "test completed", "test completed" }

Everything I found was only joining the arrays so I have a 6 items in array. Is it possible to do this without looping through the whole array (i.e. with LINQ or something like that) ?

Anyway note that linq also loops through whole array.(not always but in this case Zip in given answers) Thats just what you dont see behind the scenes! — M.kazem Akhgary
– M.kazem Akhgary, Commented Nov 21, 2015 at 18:55
@M.kazemAkhgary You got to be kidding. LINQ is a magic, it never does for, foreach and any other kind of obsolete loops :-) — Ivan Stoev
– Ivan Stoev, Commented Nov 21, 2015 at 21:47
@M.kazemAkhgary yep, you're right, but i wanted a clean code :) thats awesome with LINQ :) — sharpie_0815
– sharpie_0815, Commented Nov 22, 2015 at 8:07

Giorgi · Accepted Answer · 2015-11-21 18:17:52Z

8

You can do it with Enumerable.Zip method like this:

var joined = array1.Zip(array2, (first, second) => first + " " + second);

answered Nov 21, 2015 at 18:17

Giorgi

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Sergey Kalinichenko · Accepted Answer · 2015-11-21 18:17:54Z

8

You can do it with LINQ using Zip:

var res = array1.Zip(array2, (a, b) => $"{a} {b}").ToArray();

Note: If you do not have the latest compiler, use a+" "+b instead of $"{a} {b}".

answered Nov 21, 2015 at 18:17

Sergey Kalinichenko

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