linked-list-problems.md

Linked List

Basic

Problem	Difficulty
707. Design Linked List	Medium

Traversal

Problem	Difficulty

• https://leetcode.com/problems/convert-binary-number-in-a-linked-list-to-integer/description/ 1151
• https://leetcode.com/problems/find-the-minimum-and-maximum-number-of-nodes-between-critical-points/description/ 1310 |725. Split Linked List in Parts|Medium|
• https://leetcode.com/problems/merge-nodes-in-between-zeros/description/ 1333
• https://leetcode.com/problems/linked-list-components/description/ 1428

Remove

Problem	Difficulty
203. Remove Linked List Elements	Easy
237. Delete Node in a Linked List	Medium

• https://leetcode.com/problems/delete-nodes-from-linked-list-present-in-array/description/ 1341
• https://leetcode.com/problems/remove-nodes-from-linked-list/description/ 1454 |83. Remove Duplicates from Sorted List|Easy| |82. Remove Duplicates from Sorted List II|Medium|

Insert

Problem	Difficulty

• https://leetcode.com/problems/insert-greatest-common-divisors-in-linked-list/description/ 1279
• https://leetcode.com/problems/insertion-sort-list/description/

Reverse

Problem	Difficulty
206. Reverse Linked List	Easy
92. Reverse Linked List II	Medium

• https://leetcode.com/problems/swap-nodes-in-pairs/
• https://leetcode.com/problems/reverse-nodes-in-k-group/description/

Two Pointers

Problem	Difficulty
19. Remove Nth Node From End of List	Medium

• https://leetcode.com/problems/rotate-list/description/
• https://leetcode.com/problems/swapping-nodes-in-a-linked-list/description/ 1386 |143. Reorder List|Medium| |141. Linked List Cycle|Easy| |142. Linked List Cycle II|Medium| |328. Odd Even Linked List|Medium| |86. Partition List|Medium| |160. Intersection of Two Linked Lists|Easy|

Middle

Problem	Difficulty
876. Middle of the Linked List	Easy
2095. Delete the Middle Node of a Linked List	Medium
234. Palindrome Linked List	Easy

• https://leetcode.com/problems/maximum-twin-sum-of-a-linked-list/ 1317

Merge

Problem	Difficulty
21. Merge Two Sorted Lists	Easy
2. Add Two Numbers	Medium

• https://leetcode.com/problems/add-two-numbers-ii/description/
• https://leetcode.com/problems/double-a-number-represented-as-a-linked-list/description/ 1393 |23. Merge k Sorted Lists|Hard| |1669. Merge In Between Linked Lists|Medium| |2181. Merge Nodes in Between Zeros|Medium 1333|

Other

Problem	Difficulty
1472. Design Browser History	Medium
138. Copy List with Random Pointer	Medium

• https://leetcode.com/problems/linked-list-random-node/description/
• https://leetcode.com/problems/flatten-a-multilevel-doubly-linked-list/description/
• https://leetcode.com/problems/remove-zero-sum-consecutive-nodes-from-linked-list/ 1782 |146. LRU Cache|Medium|
• https://leetcode.com/problems/lfu-cache/description/ hard
• https://leetcode.com/problems/all-oone-data-structure/description/ hard
• https://leetcode.com/problems/design-skiplist/description/ hard