You are given therootof a binary search tree (BST) and an integerval. Find the node in the BST that the node's value equalsvaland return the subtree rooted with that node. If such a node does not exist, returnnull. Example 1: Input:root = [4,2,7,1,3], val = 2Output:[2,1...
publicTreeNode searchBST(TreeNode root, intval) {if(root ==null|| root.val==val) {returnroot; } Queue<TreeNode> queue = new LinkedList<TreeNode>(); queue.offer(root);while(!queue.isEmpty()) { TreeNode temp = queue.poll();if(temp !=null&& temp.val==val) {returntemp; }elseif(...
Given the root node of a binary search tree (BST) and a value. You need to find the node in the BST that the node's value equals the given value. Return the subtree rooted with that node. If such node doesn't exist, you should return NULL. For example, Given the tree: 4 / \ ...
travel(tree.rchild) //对右孩子递归调用 } } 递归遍历二叉树可以参考递归函数的定义与实现部分的内容: 1递归函数 recursive function :输出正整数N各个位上的数字 2 还可以参考后面启动代码里面的其他已经实现的递归函数,二叉树的很多操作都是通过递归函数实现的。 例如,可以参考 print_in_order_recursive 的实现。
Iterative version of Insert a node in Binary Search Tree """ Definition of TreeNode: class TreeNode: def __init__(self, val): self.val = val self.left, self.right = None, None """ class Solution: """ @param: root: The root of the binary search tree. @param: node: insert thi...
insert(5); searchTree.insert(7); searchTree.printInOrder(searchTree.tree); // 1->2->3->4->5->6->7-> } } (二)、二叉查找树的查找操作 我们先取根节点,如果它等于我们要查找的数据,那就返回。如果要查找的数据比根节点的值小,那就在左子树中递归查找;如果要查找的数据比根节点的值大,那就...
若p结点的左子树和右子树均不空:在删去p之后,为保持其它元素之间的相对位置不变,可按中序遍历保持有序进行调整,可以有两种做法 a. 令p的左子树为f的左/右(依p是f的左子树还是右子树而定)子树,s为p左子树的最右下的结点,而p的右子树为s的右子树 b. 令p的直接前驱(in-order predecessor)或直接后继(in...
Given the root node of a binary search tree (BST) and a value to be inserted into the tree, insert the value into the BST. Return the root node of the BST after the insertion. It is guaranteed that the new value does not exist in the original BST. ...
You are given therootnode of a binary search tree (BST) and avalueto insert into the tree. Returnthe root node of the BST after the insertion. It isguaranteedthat the new value does not exist in the original BST. Noticethat there may exist multiple valid ways for the insertion, as lon...
1.Every node in the left subtree must be less than the current node 2.Every node in the right subtree must be greater than the current node Here the tree in Figure 2 is a binary search tree. Finding a data in a Binary Search Tree ...