Question

When this is run, there are 35 errors that I dont understand. For instance it points line 12 and says p = list and next is line 5 q = next(p). Could someone please help me with these answers to my code? p = list; q = next(p); while (q! == null) { if(next(q! == null) { insAfter q, x); } else { p = q; q = next(q); } } //e. Delete last element from list p = list; q = next(p); if(p == null) { System.out.println("Void deletion"); System.exit(1); } else { while (q! == null) { if (next (p) == null) { next(p) = null; freenode (q); } else { p = q; q = next(q); } } } //f. Delete nth element from list int n; p = list; q = next(p); if(p == null) { System.out.println("Void deletion"); System.exit(1); } else { for (int i = 0; i < n; i++) { p = q; q = next(q); } next(p) = null freenode(q); } //j. Insert an element after the nth element int n; p = list; q = next(p); for (int i = 0; i < n; i++) { p = q; q = next(q); } insAfter (q, x); //n. Return number of elements in list p = list int i = 0; while (p! - null) { i++; p = next(p); } System.out.println("The number of elements in list is:" + i);