Question

implement the removefirst method that removes the first occurrence of the given value, or does nothing if the list does not contain the value.

Answer 1

To remove the first occurrence of a given value in a list, traverse the list, find the value, update the previous node's next pointer, and dispose of the node.

Step-by-step explanation:

To implement the removeFirst method that removes the first occurrence of a given value, you can follow these steps:

1. Traverse the list and locate the first occurrence of the given value.
2. Once found, update the previous node's next pointer to skip the node containing the value.
3. Dispose of the node containing the value.

Here's an example implementation in Java:

public void removeFirst(int value) {
Node current = head;
Node previous = null;

while (current != null) {
if (current.data == value) {
if (previous != null) {
previous.next = current.next;
} else {
head = current.next;
}
current = null;
return;
}

previous = current;
current = current.next;
}
}