Linked List Questions et reponses d'entretien
Question 6. Clone a linked list with next and random pointers.
Create a copy of each node and link the copies, then separate the original and cloned lists.
Example:
Input: 1 -> 2 -> 3 -> 4
Output: 1' -> 2' -> 3' -> 4'
Est-ce utile ?
Ajouter un commentaire
Voir les commentaires
Question 7. Detect the intersection point of two linked lists.
Find the lengths of both lists, move the longer list's pointer ahead, and then iterate to find the intersection.
Example:
Input: List1: 1 -> 2 -> 3, List2: 6 -> 5 -> 2 -> 3
Output: Node with value 2
Est-ce utile ?
Ajouter un commentaire
Voir les commentaires
Question 8. Flatten a multilevel doubly linked list.
Use recursion to flatten each level and connect the flattened levels.
Example:
Input: 1 <-> 2 <-> 3 <-> 7 <-> 8 <-> 11 <-> 4 <-> 9 <-> 12
Output: 1 <-> 2 <-> 3 <-> 4 <-> 7 <-> 8 <-> 9 <-> 11 <-> 12
Est-ce utile ?
Ajouter un commentaire
Voir les commentaires
Question 9. Implement LRU (Least Recently Used) Cache using a linked list.
Maintain a doubly linked list to represent usage order and a hash map for quick access.
Example:
Cache capacity = 3
Operations: Get(2), Put(2, 6), Get(1), Put(1, 5), Put(1, 2)
Output: 6, 5, 2
Est-ce utile ?
Ajouter un commentaire
Voir les commentaires
Question 10. Reverse nodes in k-group in a linked list.
Reverse k nodes at a time, and connect the reversed groups.
Example:
Input: 1 -> 2 -> 3 -> 4 -> 5, k = 2
Output: 2 -> 1 -> 4 -> 3 -> 5
Est-ce utile ?
Ajouter un commentaire
Voir les commentaires
Les plus utiles selon les utilisateurs :