输入并建立两个稀疏矩阵A和B的十字链表, 输出稀疏矩阵, 两完成两稀疏矩阵的加法运算,结果存放在稀疏矩阵A中, 要求相加结果为0的元素从结果稀疏矩阵的十字链表中删除, 输出A稀疏矩阵-Input and the establishment of two sparse matrices A and B, cross linked, the output matrix, the two completed the addition of two sparse matrix computation, the results stored in the sparse matrix A, the required sum of the results for the 0 element sparse matrix from the results of cross-linked Delete, Output A sparse matrix