将相连的圈变形

朴灿烈づ我的快乐病毒、 2022-05-22 03:23 98阅读 0赞

[原题][Link 1]不一样，我理解有偏差!

import java.util.ArrayList;
    public class Solution {
         class Point{
             int x;
             int y;
            public Point(int i,int j){
               x=i;
               y=j;
            }
        }
        public void solve(char[][] board) {
            if(board==null||board.length==0||board[0].length==0){
              return ;
            }
    
           ArrayList<Point>list=new ArrayList<>();
            for(int i=0;i!=board.length;i++){
    
                 for(int j=0;j!=board[0].length;j++){
    
                        if(board[i][j]=='O'){
                             //判断上下左右是否是'O'
                            //上
                            if(i-1>=0)
                            {
                              if(board[i-1][j]=='O')
                              {
                                  Point point=new Point(i,j);
                                  list.add(point);
                                  continue;
                              }
    
                            }
                            //下
                            if(i+1<board.length)
                            {
                              if(board[i+1][j]=='O'){
                                  Point point=new Point(i,j);
                                  list.add(point);
                                  continue;
                              }
    
                            }
                            //左
                            if(j-1>=0){
                              if(board[i][j-1]=='O'){
                                  Point point=new Point(i,j);
                                  list.add(point);
                                  continue;
                              }
                            }
                            //右
                            if(j+1<board[0].length){
                               if(board[i][j+1]=='O'){
                                  Point point=new Point(i,j);
                                  list.add(point);
                                  continue;
                               }
                            }
                        }
                 }
            }
            for(Point point:list){
                 board[point.x][point.y]='X';
            }
    
    }
    
        //打印二维字符串数组
        public void printArr(char[][]board){
            for(int i=0;i!=board.length;i++){
                 for(int j=0;j!=board[0].length;j++){
                    System.out.print(board[i][j]+" ");
                 }
                 System.out.println();
            }
            System.out.println();
        }
        public static void main(String[]args){
            System.out.println("Hello World!");
            /*char[][]board={ {'X','X','X','X'}, {'X','O','O','X'}, {'X','X','O','X'}, {'X','O','X','X'} };*/
            char[][]board={
               {
       'O','O'},
               {
       'O','O'}
            };
            Solution s=new Solution();
            s.printArr(board);
            s.solve(board);
            s.printArr(board);
        }
    }

![这里写图片描述][70]

[Link 1]: https://www.nowcoder.com/questionTerminal/c159db5028034aa595043a1a220a62dd
[70]: /images/20220522/e1ecb69bd710453aa130295d9e83ad57.png