假设稀疏矩阵A和B均以三元组表作为存储结构，试写出矩阵相加(相乘—选做)的算法，另设三元组表C存放结果矩阵。 -Assuming a sparse matrix A and B are in triples table as a storage structure, try to write the matrix (multiplied by- election) algorithm by adding additional triples Table C store the resulti