java-稀疏矩阵简单范例

public class SparseMatrix {

    
    public static int[][] arrToSparse(int[][] arr){
        int cl = 1;
        for (int i = 0; i < arr.length; i++) {
            for (int j = 0; j < arr[i].length; j++) {
                if(arr[i][j] != 0){
                    cl++;
                }
            }
        }
        int[][] sarr = new int[cl][3];
        sarr[0][0] = arr.length;
        sarr[0][1] = arr[0].length;
        sarr[0][2] = cl - 1;
        int count = 1;
        for (int i = 0; i