第六天

package shuzu;

import java.util.Arrays;

public class Demo08 {
public static void main(String[] args) {
//创建一个二维数组。0为黑，1为白
int[][] qipan = new int[11][11];
qipan[1][2] = 1;
qipan[2][3] = 2;
dayin(qipan);
//转化为稀疏字符

        int sum =0;//读取非0,数字的个数
        for (int i = 0; i < qipan.length; i++) {
            for (int i1 = 0; i1 < qipan[i].length; i1++) {
                if (qipan[i][i1]!=0){
                    sum++;
                }
            }
        }
        System.out.println("有效值个数: "+sum);
        System.out.println("=======================================================");



        //定义一个稀疏数组
        int xishu[][]=new int[sum+1][3];
        xishu[0][0]=11;
        xishu[0][1]=11;
        xishu[0][sum]=sum;
        int k=1;
        for (int i = 0; i < qipan.length; i++) {
            for (int i1 = 0; i1 < qipan[i].length; i1++) {
                if (qipan[i][i1]!=0){

                    xishu[k][0]=i;
                    xishu[k][1]=i1;
                    xishu[k][2]=qipan[i][i1];
                    k=k+1;

                }
            }
        }
          dayin(xishu);//打印稀疏数组的值
          System.out.println();//换行




        //读取稀疏数组，进行还原
        System.out.println("还原");
        int[][] huanyuan=new int[xishu[0][0]][xishu[0][1]];
        for (int i = 1; i < xishu.length; i++) {
            huanyuan[xishu[i][0]][xishu[i][1]]=xishu[i][2];
            }
        dayin(huanyuan);//打印还原数组
        }
        public static void dayin(int[][]erweishuzu){
        //打印二维数组的方法
            for (int[] intss : erweishuzu) {
                for (int anInts : intss) {
                    System.out.print(anInts+"\t");
                }
                System.out.println();
            }
        }
    }