Help with matrix code

I am attempting to create the adjacency matrix of a star tree: https://en.wikipedia.org/wiki/Star_(graph_theory)

I have the following for a 10 vertices graph:

AdjacencyMatrix = [0 1 1 1 1 1 1 1 1 1
                   1 0 0 0 0 0 0 0 0 0
                   1 0 0 0 0 0 0 0 0 0
                   1 0 0 0 0 0 0 0 0 0
                   1 0 0 0 0 0 0 0 0 0
                   1 0 0 0 0 0 0 0 0 0
                   1 0 0 0 0 0 0 0 0 0
                   1 0 0 0 0 0 0 0 0 0
                   1 0 0 0 0 0 0 0 0 0
                   1 0 0 0 0 0 0 0 0 0]; % sets the adjacency matrix

Is there a quicker way to create a matrix like this but of a larger scale e.g. 100x100?

Answer 1

[Star Strider]

One approach:

AdjacencyMatrix = zeros(100);
AdjacencyMatrix(2:size(AdjacencyMatrix,1), 1) = 1;
AdjacencyMatrix(1, 2:size(AdjacencyMatrix,2)) = 1;

[MK96]

Thanks

[Star Strider]

My pleasure.