Swap array - list transform.positions

[altered3]

Thank You in advance!
I have a grid of instantiated gameobject’s and have tagged them as master,
I created an array from this 7x7 grid and created a list from those.
I am attempting to get the transform.positions from this list and shuffle the list and then replace the grid with the shuffled transform.positions.

 IEnumerator shuffleGrid(){
        GameObject[] gms = GameObject.FindGameObjectsWithTag ("Master");
        List<GameObject> transformsLoc = new List<GameObject>();
        transformsLoc.AddRange(gms);
        foreach (GameObject gm in  transformsLoc)
        {
           Vector3 temp = gm.transform.localPosition; //this gets the list of all  transform.positions - just no idea how to randomize the list of these
           print(temp);
        }
    }
    yield return null;
}

I have tried many diff things from an extensive google and unity3d search but cant seem to find any good ideas.
Thank You again for any assistance
AS

[jgodfrey]

Why not simply shuffle the array itself and skip the list generation? There are several standard algorithms for that and lots of C# code on the net. For instance, there’s some options here:

http://stackoverflow.com/questions/108819/best-way-to-randomize-an-array-with-net

… of special interest might be the answer from Matt Howells

or here…

http://csharphelper.com/blog/2014/07/randomize-arrays-in-c/

or, here’s one that shuffles a list…

http://www.vcskicks.com/randomize_array.php

It shouldn’t be too difficult to find something that suits your needs…