Can you solve this real interview question? Linked List in Binary Tree - Given a binary tree root and a linked list with head as the first node. Return True if all the elements in the linked list starting from the head correspond to some downward path
Given a binary treerootand a linked list withheadas the first node. Return True if all the elements in the linked list starting from theheadcorrespond to somedownward pathconnected in the binary tree otherwise return False. In this context downward path means a path that starts at some node ...
packageLeetCode_1367importLeetCode_1382.TreeNodeimportLeetCode_390.ListNode/*** 1367. Linked List in Binary Tree *https://leetcode.com/problems/linked-list-in-binary-tree/description/* * Time complexity: O(head.size * root.size) * Space complexity: O(root.size) **/classSolution { fun is...
Linked List Cycle Given a linked list, determine if it has a cycle in it. 知道概念之后就很简单。两个pointer,一个每次走两步,一个每次走一步。如果有环,两个pointer必然相遇。 1 2 3 4 5 6 7 8 9 10 11 12 13 public class Solution { public boolean hasCycle(ListNode head) { ListNode ...
https://leetcode.com/problems/flatten-binary-tree-to-linked-list/ 题目: Given a binary tree, flatten it to a linked list in-place. For example, Given 1 / \ 2 5 / \ \ 3 4 6 The flattened tree should look like: 1 \ 2 \ 3 \ 4 \ 5 \ 6 ...
[leetcode] 114. Flatten Binary Tree to Linked List Description Given a binary tree, flatten it to a linked list in-place. For example, given the following tree: 1 / \ 2 5 / \ \ 3 4 6 1. 2. 3. 4. 5. The flattened tree should look like:...
Given a binary tree, flatten it to a linked list in-place. For example, Given 代码语言:javascript 代码运行次数:0 运行 AI代码解释 1/\25/\ \346 The flattened tree should look like: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 ...
Linked List Cycle 链表循环Description: Detect if a cycle exists in a linked list.描述:检测链表中是否存在环。Hint: Use two pointers (slow and fast); if they meet, a cycle exists.提示:使用两个指针(慢速和快速);如果它们相遇,则存在循环。Solution: see here 解决办法:看这里 Merge Two Sorted Li...
Given a binary tree, flatten it to a linked list in-place. For example, Given 1 / \ 2 5 / \ \ 3 4 6 The flattened tree should look like: 1 \ 2 \ 3 \ 4 \ 5 \ 6 递归法 思路 相当于一次先序遍历, 将先访问的点存储在数组里, 下一个访问的节点为之前访问的点的右子树 ...
Given a binary tree, flatten it to a linked list in-place. For example, given the following tree: {代码...} The flattened tree should look like: {...