public class Demo07 {
    public static void main(String[] args) {
        //1\建立一個二維陣列 11*11  0：沒有棋子   1：黑棋    2：白棋
        int[][] array1 = new int[11][11];
        array1[1][2] = 1;
        array1[2][3] = 2;
        //輸出原始的陣列
        System.out.println("輸出原始的陣列");
        for (int[] ints : array1) {
            for (int anInt : ints) {
                System.out.print(anInt+"\t");
            }
            System.out.println();
        }
        System.out.println("==========================================");
        //轉換為稀疏陣列儲存
        //獲取有效值的個數
        int sum = 0;
        for (int i = 0; i < 11; i++) {
            for (int j = 0; j < 11; j++) {
                if (array1[i][j]!=0) {
                    sum++;
                }
            }
        }
        System.out.println("有效值的個數："+sum);

        //2.建立一個稀疏陣列的陣列
        int[][]  array2 = new int[sum+1][3];

        array2[0][0] = 11;
        array2[0][1] = 11;
        array2[0][2] = sum;

        //遍歷二維陣列，將非零的值，存放稀疏陣列中
        int count = 0;
        for (int i = 0; i < array1.length; i++) {
            for (int j = 0; j < array2.length; j++) {
                if (array1[i][j]!=0){
                    count++;
                    array2[count][0] = i;
                    array2[count][1] = j;
                    array2[count][2] = array1[i][j];
                }

            }

        }
        //輸出稀疏陣列
        System.out.println("稀疏陣列");

        for (int i = 0; i < array2.length; i++) {
            System.out.println(array2[i][0]+"\t"
            +array2[i][1]+"\t"
            +array2[i][2]+"\t");

        }
        System.out.println("==========================================");
        System.out.println("還原");
        //1、讀取稀疏陣列
        int[][] array3 = new int[array2[0][0]][array2[0][1]];

        //2、給其中的元素還原他的值
        for (int i = 1; i < array2.length; i++) {
            array3[array2[i][0]][array2[i][1]] = array2[i][2];

        }
        //3、列印還原一下
        System.out.println("輸出一個還原的陣列");

        for (int[] ints : array3) {
            for (int anInt : ints) {
                System.out.print(anInt+"\t");

            }
            System.out.println();

        }

    }
}