P2 Given the following linked list where each node has a data & link field & uses the pointers pl₂p², P3, P [C]]>[G][»J_D> [PD PIO P3 P20 P4 Draw a similar diagram to show how this configuration changes when the given segment of code executes. (Assume each partis independent from the other, a) p3=p23 p4.link=p2.links b) p3.link=pa, link; P2.link = pi.link: p4. link =p3.link; @ palink=p3; pl. link. link=pl; pl. link, link=pa.link; p4=null; p2=p4;

2. Each student at Middlesex County College takes a different number of courses, so the registrar has decided to use linear linked lists to store each student's class schedule and an array to represent the entire student body. A portion of this data structure is shown below: link Sec cr CSC16213 →HISHO 24 $||1|| 1/1234 2/2 357 CSC236/4 37 These data show that the first student (ID: 1111) is taking section 1 of CSC162 for 3 credits and section 2 of HIS101 for 4 credits; the second student is not enrolled; the third student is enrolled in CSC236 section 4 for 3 credits. s Write a class for this data structure. Provide methods for creating the original array, inserting a student's initial class schedule, adding a course, and dropping a course. Include a menu-driven program that uses the class.

Computer science question

Question 15 Why does our node class have two versions of the link member function? One is public, the other is private. One is to use with a const pointer, the other with a regular pointer. One returns the forward link, the other returns the backward link. One returns the data, the other returns a pointer to the next node.