Implement the sparse matrix representation of Section 12.2. Your implementation should support the following operations on the matrix: • insert an element at a given position, • delete an element from...

Implement the sparse matrix representation of Section 12.2. Your implementation should support the following operations on the matrix: • insert an element at a given position, • delete an element from a given position, • return the value of the element at a given position, • take the transpose of a matrix, and