A linked list class uses a Node class with successor reference next,and uses a reference first to point to the first node of the list.A positive index k is given,and we want to set a reference pred to point to the node with index k-1.The right code to use is
A) pred = first;
For (int i = 0;i

Question

A linked list class uses a Node class with successor reference next,and uses a reference first to point to the first node of the list.A positive index k is given,and we want to set a reference pred to point to the node with index k-1.The right code to use is
A) pred = first;
For (int i = 0;i < k;i++)
Pred = pred.next;
B) pred = first;
For (int i = 0;i < = k;i++.
Pred ++;
C) pred = first;
For (int i = 1;i < k;i++.
Pred = pred.next;
D) pred = head;
For (int k : list.
K--;

Quizplus · Accepted Answer

Option A starts indexing from 0, which is not required according to the problem statement. Option B uses the wrong operator, it should be "pred = pred.next" instead of "pred++". Option D refers to variables that are not defined in the problem statement (head and list) and uses a different syntax, which is not applicable here. Therefore, the correct option is C, which sets the initial reference to the first node and iterates through k-1 nodes using a loop starting from 1.

A Linked List Class Uses a Node Class with Successor