Sodoku游戏以及如何使用Math.random（）将数字输入到我的网格中

I have made a sudoku game where the computer plays against the user(human) and need help implementing one part of it. I have tried everything!! So I've done Mode 1 where the user selects moves for both the human and the computer using StdIn, but now I have to do mode 0 where the computer does a random move.I have made a sudoku game where the computer pl