array combinations

Soft Engg Engg

Hi, I have two different arraylists such as Array1={"a", "sd", "fgh"} and Array2 = {"c", "op"}. I want to find out the possible combinations of items in these two Arrays....The output will be...
asd,sda,ac,ca,aop,opa,csd,sdc,fgha,afgh,opfgh,fghop,..etc.

I am using C#.Net 2 Win Apps.....

Thanks in advance

2 Replies

Know the answer? Post it — somebody with the same question will find it here.

Mike Gold19y ago
was this a homework problem? Please don't post homework problems on the site. If we just give you the answer then what is the point of taking the class? If it wasn't homework, then my apologies.
Alan19y ago
Try this:

using System;

class Test
{

    static void Main()
    {
      string[] Array1 ={"a", "sd", "fgh"};
      string[] Array2 = {"c", "op"};
      string[] Array3 = new string[Array1.Length + Array2.Length];
      Array.Copy(Array1, 0, Array3, 0, Array1.Length);
      Array.Copy(Array2, 0, Array3, Array1.Length, Array2.Length);

      int[] set = new int[]{0, 1, 2, 3, 4};
      int[][] perm = new int[20][];
      int count = 0;
      for(int i = 0; i < 4; i++)
        for(int j = i + 1; j < 5; j++)
        {
            perm[count++] = new int[]{set[i], set[j]};
            perm[count++] = new int[]{set[j], set[i]};
        }

      Console.WriteLine("The 20 possible permutations are :\n");
      for(int i = 0 ; i < 20 ; i++)
      {
        Console.WriteLine("{0,3} : {1}", i+1, Array3[perm[i][0]] + Array3[perm[i][1]]);
      }
      Console.ReadLine();
    }

}