树的遍历方式总体上有两种：DFS和BFS 其中DFS包含了前序 中序和后序遍历，而BFS则为层次遍历。 DFS的实现方式： 递归 非递归，使用辅助栈 递归程序 public class Recursion public void preorderRec TreeNode root if root null return System.out.println root.val visit the n ...
2015-06-25 07:58 0 1906 推荐指数：
Return the root node of a binary search tree that matches the given preorder traversal. (Recall that a binary search tree is a binary tree where ...
Given an n-ary tree, return the postorder traversal of its nodes' values. For example, given a 3-ary tree: Return its postorder ...
Given an n-ary tree, return the preorder traversal of its nodes' values. For example, given a 3-ary tree: Return its preorder traversal ...
Given an n-ary tree, return the level order traversal of its nodes' values. (ie, from left to right, level by level). For example, given a 3-ary ...
Given a binary tree, return the level order traversal of its nodes' values. (ie, from left to right, level by level). For example:Given binary ...
Given a binary tree, return the bottom-up level order traversal of its nodes' values. (ie, from left to right, level by level from leaf to root ...
Given inorder and postorder traversal of a tree, construct the binary tree. Note: You may assume that duplicates do not exist in the tree ...
Given a binary tree, return the inorder traversal of its nodes' values. Example: Follow up: Recursive solution is trivial, could you do ...
