J250511/01-JavaSE阶段代码/J20250525/Demo04.java

package j1_java_basic.J20250525;

/**
 * @author WanJl
 * @version 1.0
 * @title Demo04
 * @description 二维数组
 * @create 2025/5/25
 */
public class Demo04 {
    public static void main(String[] args) {
        //动态初始化
        //数组类型[][] 数组名=new 数组类型[二维数组的长度][一维数组的长度];
        /*int[][] arr=new int[19][19];
        for (int i = 0; i < arr.length; i++) {
            for (int j = 0; j <arr[i].length ; j++) {
                System.out.print(arr[i][j]+"  ");
            }
            System.out.println();
        }*/


        String[][] arr1=new String[19][19];

        arr1[0][0]="+";
        for (int i = 0; i < arr1.length; i++) {
            for (int j = 0; j < arr1[i].length; j++) {
                arr1[i][j]="+";
            }
        }

        arr1[7][7]="●";


        for (int i = 0; i < arr1.length; i++) {
            for (int j = 0; j < arr1[i].length; j++) {
                System.out.print(arr1[i][j]+"  ");
            }
            System.out.println();
        }


    }
}