Question

How do you delete the tail node of a singly linked list if the link has the head and does no have tail? Write the code. How much time does it take to do it? (java)

Answer #1

- We need iterate through the linked till before last node
- Store the last in temp variable
- Remove the link with before last node by making prev->next as NULL
- Than delete the last node

**It takes O(n) as we dont have the tail node so we need
to iterate the till before last node and remove that
node**

```
void deleteEnd()
{
// need to to find the lst before node
Node prev = head;
// iterate till the last node
while (prev.next.next != null)
prev = prev.next;
// making the prev.next as null so that the link will be removed
prev.next = null;
}
```

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