leetcode289

public class Solution
    {
        public void GameOfLife(int[][] board)
        {
            var row = board.GetLength() - ;
            var col = board[].GetLength() - ;
            var list = new List<List<int>>();
            for (int r = ; r <= row; r++)
            {
                var l = new List<int>();
                for (int c = ; c <= col; c++)
                {
                    l.Add(board[r][c]);
                }
                list.Add(l);
            }

            for (int r = ; r <= row; r++)
            {
                for (int c = ; c <= col; c++)
                {
                    int livecount = ;
                    for (int i = -; i <= ; i++)
                    {
                        for (int j = -; j <= ; j++)
                        {
                            if (i ==  && j == )
                            {
                                continue;
                            }
                            var newx = r + i;
                            var newy = c + j;
                            if (newx <  || newx > row || newy <  || newy > col)
                            {
                                continue;
                            }
                            if (board[newx][newy] == )
                            {
                                livecount++;//活节点
                            }
                        }
                    }
                    if (board[r][c] == )//当前节点是活节点
                    {
                        if (livecount ==  || livecount == )
                        {
                            list[r][c] = ;
                        }
                        else
                        {
                            list[r][c] = ;
                        }
                    }
                    else
                    {
                        if (livecount == )
                        {
                            list[r][c] = ;
                        }
                    }
                }
            }

            for (int i = ; i < list.Count; i++)
            {
                for (int j = ; j < list[].Count; j++)
                {
                    board[i][j] = list[i][j];
                }
            }
        }
    }