Merge 2 arrays using LINQ

Question

I have two simple array and I would like to merge using join linq:

int[] num1 = new int[] { 1, 55, 89, 43, 67, -3 };
int[] num2 = new int[] { 11, 35, 79, 23         


        

Answer 1

try like below... it will help you..

int[] num1 = new int[] { 1, 55, 89, 43, 67, -3 };
int[] num2 = new int[] { 11, 35, 79, 23, 7, -10 };
var result = num1.Union(num2).ToArray();

Answer 2

var result = num1.Concat(num2);

Doesn't allocate any memory. Is this sufficient for your needs?

Answer 3

You can do it using Concat and ToArray, like this:

var res = num1.Concat(num2).ToArray();

This will put all elements of num2 after elements of num1, producing res that looks like

int[] { 1, 55, 89, 43, 67, -3, 11, 35, 79, 23, 7, -10 };

EDIT : (in response to a comment: "how can I also sort either allNumbers and res?")

Once your two arrays are merged, you can use OrderBy to sort the result, like this:

var res = num1.Concat(num2).OrderBy(v=>v).ToArray();

Answer 4

var allNumbers = num1.Concat(num2);

Answer 5

Use Concat

  var res= num1.Concat(num2);