Combination of two integer array

Question

I have two list of int array say Input1 and Input2. List Input1; List Input2; Data in Input1 would look be - {123}{456}{8910} Data in Input 2 can be {111213}{141516} The final combined result should be look like - {123111213} {123141516}{456111213}{456111213}{8910111213}{8910141516} How can I achieve that? Also is there any efficeint way to solve this since I will have few hundreds of int array on both Input1 and Input 2 list.

Vulpes · Answer

Try the following which should be reasonably efficient even for much larger lists of arrays: using System; using System.Collections.Generic; using System.Linq; class Test { static void Main() { var Input1 = new List (){new[]{123}new[]{456}new[]{8910}}; var Input2 = new List (){new[]{111213}new[]{141516}}; var Input3 = (from a1 in Input1 from a2 in Input2 select a1.Concat(a2).ToArray()).ToList(); // check it worked foreach(int[] a3 in Input3) { Console.WriteLine(String.Format({{{0}}} String.Join( a3))); } Console.ReadKey(); } }

Chintan Rathod · Answer

Hi Deer You can use AddRange method of list. example firstList.AddRange(secondList); Reference ---------- http://msdn.microsoft.com/en-us/library/z883w3dc.aspx Thanks.

Deer Park · Answer

Thank you!

Deer Park · Answer

Perfect!! Worked perfectly...Thanks a lot..Appreciated!!