稀疏矩阵是指那些多数元素为零的矩阵。利用‘稀疏’特点进行存储和计算可以大大节省存储空间，提高效率。通过对稀疏矩阵的存储表示，实现矩阵的基本操作。-Sparse matrix refers to those matrices that are mostly zero. The use of sparse features for storage and computing can greatly save storage space and improve efficiency. The ba