说明：  设计一个稀疏矩阵计算器，要求能够：⑴输入并建立稀疏矩阵；⑵输出稀疏矩阵；⑶执行两个矩阵相加；⑷执行两个矩阵相乘；⑸求一个矩阵的转置矩阵；⑹求一个矩阵的逆矩阵（选做）。
(Design of a sparse matrix calculator, requires the ability to: ⑴ input and the establishment sparse matrix ⑵ output sparse matrix ⑶ perform two matrices are added ⑷ perform two matrix multiplication ⑸ seeking a matrix transpose matrix ⑹ seeking a inverse matrix (Optional).)