key):self.left=Noneself.right=Noneself.val=key# create rootroot=Node(1)''' following is the tree after above statement1/ \None None'''root.left=Node(2);root.right=Node(3);''' 2 and 3 become left and right children of 11/ \2 3/...
binaryTree.postOrderTraversal(); }publicstaticclassBinaryTree {privateNode root;publicvoidpreOrderTraversal() {this.root.preOrderTraversal(); }publicvoidinOrderTraversal() {this.root.inOrderTraversal(); }publicvoidpostOrderTraversal() {this.root.postOrderTraversal(); }publicBinaryTree(Node root) {t...
1. Preorder Tree Traversal 1//Solution 1. With Stack2//Time Complexity : O(n)3//Space Complexity: O(h) ~ O(log n)4publicclassSolution {5publicList<Integer>preorderTraversal(TreeNode root) {6ArrayList<Integer> list =newArrayList<Integer>();7if(root ==null)returnlist;89Stack<TreeNode>...
二叉树非递归遍历Leetcode 144 binary tree preorder traversal 下面这种写法使用了一个辅助结点p,这种写法其实可以看作是一个模版,对应的还有中序和后序的模版写法,形式很统一,方便于记忆。 辅助结点p初始化…
Given a binary tree, return the preorder traversal of its nodes' values. For example: Given binary tree {1,#,2,3}, {代码...} return [1,2,3].
107. Binary Tree Level Order Traversal II 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). For example: Given binary tree [3,9,20,null,null,15,7], 代码语言:javascript 代码运行次数:0 ...
102. Binary Tree Level Order Traversal 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 tree [3,9,20,null,null,15,7], 代码语言:javascript 代码运行次数:0 运行 AI代码解释 3 / \ 9 20 /...
/*t is a binary tree .Each node of t has three fields: lchild, data, and rchild.*/ { If t! =0 then { Postorder(t->lchild); Postorder(t->rchild); Visit(t); } } Example:Let us consider a given binary tree. Therefore the postorder traversal of the above tree will be:0,2,4...
left sibling (语法树的) 左节点 trisorb (树脂) 三碘甲状腺原氨酸测定药箱 compound pipe (有分叉的) 复式管道 Loxopterygium (漆树科) 斜翅果属 left turn lane (交叉口外的) 左转弯车道 keeping the centre of tree open (剪树) 使中间透光 three level structure (立体交叉的) 三平面构筑物 ...
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