Sparse array

A two-dimensional array , Most of the values are defaults , A few cases with other values , Can be converted into sparse array storage , Reduce storage space , Time for space ,
The first row of the sparse array stores the size of the original array and the number of values
The remaining lines store the location information of the special value and the content of the value

0	0	0	0	0	0	0	0	0	0	0	
0	0	1	0	0	0	0	0	0	0	0	
0	0	0	2	0	0	0	0	0	0	0	
0	0	0	0	0	0	0	0	0	0	0	
0	0	0	0	0	0	0	0	0	0	0	
0	0	0	0	0	0	0	0	0	0	0	
0	0	0	0	0	0	0	0	0	0	0	
0	0	0	0	0	0	0	0	0	0	0	
0	0	0	0	0	0	0	0	0	0	0	
0	0	0	0	0	0	0	0	0	0	0	
0	0	0	0	0	0	0	0	0	0	0	
 The number of valid values ：2
 That's ok 	 Column 	 value 	
11	11	2	
1	2	1	
2	3	2

        int[][] eleven = new int[11][11];
        eleven[1][2] = 1;
        eleven[2][3] = 2;
        // Output original array 
        for (int[] ints : eleven) {
    
            for (int anInt : ints) {
    
                System.out.print(anInt+"\t");
            }
            System.out.println();
        }
        // Convert to a sparse array 
        int sum = 0;
        for (int[] ints : eleven) {
    
            for (int anInt : ints) {
    
                if (anInt != 0) {
    
                    sum++;
                }
            }
        }
        System.out.println(" The number of valid values ："+sum);
        int[][] trans = new int[sum+1][3];
        trans[0][0] = 11;
        trans[0][1] = 11;
        trans[0][2] = sum;
        int temp = 1;
        for (int i = 0; i < eleven.length; i++) {
    
            for (int j = 0; j < eleven[i].length; j++) {
    
                if (eleven[i][j]!=0){
    
                    trans[temp][0] = i;
                    trans[temp][1] = j;
                    trans[temp][2] = eleven[i][j];
                    temp++;
                }
            }
        }

        System.out.print(" That's ok "+"\t");
        System.out.print(" Column "+"\t");
        System.out.print(" value "+"\t");
        System.out.println();
        for (int[] ints : trans) {
    
            for (int anInt : ints) {
    
                System.out.print(anInt+"\t");
            }
            System.out.println();
        }