To remove a node with index 0 from a linked list,
A) just move the head reference one node forward
B) set the head reference to null
C) set a reference r to the head of the list,and then set r to null
D) throw an exception,because no list has a node with index 0

Question

Quizplus · Accepted Answer

Moving the head reference one node forward will effectively remove the first node in the linked list, as the new head will be the next node after the original head. Setting the head reference to null or setting a reference to the head and then setting it to null would completely remove the reference to the entire list. Throwing an exception is not necessary, as removing the first node is a common operation.

To Remove a Node with Index 0 from a Linked