Add values of int array to values of another int array C#

Question

I have two int arrays of the same length 5, array1 & array2. I want to add the values of array2 to the values of array1. Is there a faster/more concise way to do this other than a simple for loop? Maybe using LINQ?

for (int i = 0; i < 5; i++)
    array1[i] += array2[i];

You can even LINQ this, but the legibility will be a lot worse. — Bruno Avelar
– Bruno Avelar, Commented Aug 16, 2017 at 20:46

itsme86 · Accepted Answer · 2017-08-16 20:48:02Z

3

If you want to use LINQ, you can use Enumerable.Zip():

array1 = array1.Zip(array2, (a, b) => a + b).ToArray();

I doubt that it's faster though, and "more concise" is also questionable. For one thing, it has to allocate a whole new array instead of updating in-place like your for loop does.

answered Aug 16, 2017 at 20:48

itsme86

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1 Comment

obl Over a year ago

Thank you, yes after timing this vs the for loop, the for loop is consistently faster.

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