958. 二叉树的完全性检验
Medium | Tree, Breadth-First Search, Binary Tree
Tree
965. 单值二叉树
Easy | Tree, Depth-First Search, Breadth-First Search, Binary Tree
968. 二叉树摄像头
Hard | Dynamic Programming, Tree, Depth-First Search, Binary Tree
971. 翻转二叉树以匹配先序遍历
Medium | Tree, Depth-First Search, Binary Tree
979. 在二叉树中分配硬币
Medium | Tree, Depth-First Search, Binary Tree
987. 二叉树的垂序遍历
Hard | Hash Table, Tree, Depth-First Search, Breadth-First Search, Sorting, Binary Tree
993. 二叉树的堂兄弟节点
Easy | Tree, Depth-First Search, Breadth-First Search, Binary Tree
998. 最大二叉树 II
Medium | Tree, Binary Tree
501. 二叉搜索树中的众数
Easy | Tree, Depth-First Search, Binary Search Tree, Binary Tree
508. 最频繁的子树元素和
Medium | Hash Table, Tree, Depth-First Search, Binary Tree