static void traverseTree(TreeNode node) { if (node == null) return; System.out.println(node.value); for (TreeNode child : node.children) { traverseTree(child); } } } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 2. ...
res); Collections.reverse(res); // 反转数组 return res;}public void postorderTraversal(TreeNode root, List res) { if (root == null) { return; } res.add(root.val); // 遍历父节点 postorderTraversal
private BinTreeNode<Type> createTree(int level) { BinTreeNode<Type> root = new BinTreeNode<Type>(); if (level < 0) return null; root.left = createTree(level - 1); root.right = createTree(level - 1); return root; } private void traversePreOrder(BinTreeNode<Type> root, NodeHandle...
public TreeTraverseAction(int direction, String name) Constructs a new instance of TreeTraverseAction. Parameters: direction - the direction name - the name of action Method Details actionPerformed public void actionPerformed(ActionEvent e) Description copied from interface: ActionListener Invok...
TreeNode node = stk.pop(); if(node==null) continue; list.addFirst(node.val); //LinkedList's method. If using ArrayList here,then using 'Collections.reverse(list)'' in the end; stk.push(node.left); stk.push(node.right); } return list; } 回到顶部 层序遍历 合理利用队列的性质即可。
TreeTraverseAction public TreeTraverseAction(int direction, String name) 方法详细信息 actionPerformed public void actionPerformed(ActionEvent e) 说明从界面: ActionListener复制 发生动作时调用。 isEnabled public boolean isEnabled() 描述从类别复制: AbstractAction 如果启用该操作,则返回true。 Specified by...
reverse:将线性表进行逆序操作,这个可是从前数据结构的经典考题哦! rotate:以某个元素为轴心将线性表“旋转”。 swap:交换一个线性表中两个元素的位置。 …… Collections还有一个重要功能就是“封装器”(Wrapper),它提供了一些方法可以把一个集合转换成一个特殊的集合,如下: unmodifiableXXX:转换成只读集合,这里XXX...
Given a binary tree, return the inorder traversal of its nodes' values. For example: Given binary tree {1,#,2,3}, 1 \ 2 / 3 return [1,3,2]. 栈迭代 复杂度 时间O(b^(h+1)-1) 空间 O(h) 递归栈空间 对于二叉树b=2 思路 ...
Binary tree spiral order traversal Binary tree reverse level order traversal Binary tree boundary traversal Print leaf nodes of binary tree Count leaf nodes in binary tree get maximum element in binary tree Print all paths from root to leaf in binary tree Print vertical sum of binary tree in j...
Description The following code shows how to traverse the DOM tree as a list. Example importjava.io.StringReader;/*www.java2s.com*/importjavax.xml.parsers.DocumentBuilder;importjavax.xml.parsers.DocumentBuilderFactory;importorg.w3c.dom.Document;importorg.w3c.dom.Element;importorg.w3c.dom.Node;importo...