What is the best way to implement a 2D grid of radio buttons?

Question

What is the best way to implement a 2D grid of radio buttons so that only one option in each column and one option in each row can be selected?

Answer 1

A 1D array of 1D arrays of radio buttons. Each row (or column) would use the normal radio button functionality, while each column (or row) would be updated by a loop called whenever an individual radio button is toggled.