Sometimes a matrix is the logical data structure to store data that can be indexed in two ways. Suppose you had to design and maintain a schedule that holds information about students (the columns) and courses (the rows) in a new school. Because the school is new, it has only a few course offerings and a small student body. The table below shows that the schedule matrix is very sparsely filled. Sparsely filled arrays and matrices can be implemented by arrays of pointers to save memory. The diagrams will help you visualize how to implements this scheduling program with a dynamic data structure.

Suppose you have the following data:

Courses (3 digits) 121 Economics 112 Writing_Seminar 103 Voice 128 Algorithm_Analysis 105 Music_Theory 125 Calculus 107 Orchestral_Arranging 129 Compiler_Design 109 Piano 119 English_Literature

Students (2 digits) 14 Melody_Smith 17 Richard_Tucker 27 Beverly_Sills 16 Charles_Ives 18 Richard_Schumann 15 Franz_Lizst 28 Aaron_Copeland 29 Bill_Gates

Scheduling 29 129 128 28 107 105 18 109 105 15 109 16 107 27 103 17 103 14 109 103

Design a dynamic data structure which will hold and display the following. Implement it in a program that manages the scheduling for a small school.