114. 二叉树展开为链表
Medium | Linked List, Stack, Tree, Depth-First Search, Binary Tree
Linked List
116. 填充每个节点的下一个右侧节点指针
Medium | Linked List, Tree, Depth-First Search, Breadth-First Search, Binary Tree
117. 填充每个节点的下一个右侧节点指针 II
Medium | Linked List, Tree, Depth-First Search, Breadth-First Search, Binary Tree
138. 复制带随机指针的链表
Medium | Hash Table, Linked List
141. 环形链表
Easy | Hash Table, Linked List, Two Pointers
142. 环形链表 II
Medium | Hash Table, Linked List, Two Pointers
143. 重排链表
Medium | Linked List, Two Pointers, Stack, Recursion
146. LRU 缓存
Medium | Hash Table, Linked List, Design, Doubly-Linked List
147. 插入排序链表
Medium | Linked List, Sorting
148. 排序链表
Medium | Linked List, Two Pointers, Divide and Conquer, Sorting, Merge Sort