原创 Leetcode Binary Tree Level Order Traversal 二叉樹分層遍歷
題目： Given a binary tree, return the level order traversal of its nodes' values. (ie, from left to right, level by l
2020-02-21 03:34:56
原创 Leetcode Symmetric Tree 對稱二叉樹
題目： Given a binary tree, check whether it is a mirror of itself (ie, symmetric around its center). For example, th
2020-02-21 03:34:56
原创 Leetcode Linked List Cycle II 循環鏈表入口
題目： Given a linked list, return the node where the cycle begins. If there is no cycle, return null. 分析： 個人覺得這題的原理沒有
2020-02-21 03:34:56
原创 Leetcode Maximum Depth of Binary Tree 二叉樹最大深度
題目： Given a binary tree, find its maximum depth. The maximum depth is the number of nodes along the longest path f
2020-02-21 03:34:56
原创 Leetcode Reorder List 鏈表重排序
題目： Given a singly linked list L: L0→L1→…→Ln-1→Ln, reorder it to: L0→Ln→L1→Ln-1→L2→Ln-2→… You must do this in-plac
2020-02-21 03:34:56
原创 Leetcode Path Sum
題目： Given a binary tree and a sum, determine if the tree has a root-to-leaf path such that adding up all the values
2018-08-28 02:55:54
原创 Leetcode Minimum Depth of Binary Tree 二叉樹最小深度
題目： Given a binary tree, find its minimum depth. The minimum depth is the number of nodes along the shortest path
2018-08-28 02:55:54
2
原创 Leetcode Binary Tree Right Side View
題目： Given a binary tree, imagine yourself standing on the right side of it, return the values of the nodes you can
2018-08-28 02:55:54
原创 Leetcode Populating Next Right Pointers in Each Node
題目： Given a binary tree struct TreeLinkNode { TreeLinkNode *left; TreeLinkNode *right; TreeLi
2018-08-28 02:55:54
3
原创 Leetcode Populating Next Right Pointers in Each Node II
題目： Follow up for problem "Populating Next Right Pointers in Each Node". What if the given tree could be any binar
2018-08-28 02:55:54
原创 Leetcode Sum Root to Leaf Numbers
題目： Given a binary tree containing digits from 0-9 only, each root-to-leaf path could represent a number. An exam
2018-08-28 02:55:54
原创 Leetcode Construct Binary Tree from Inorder and Postorder Traversal 中序後序遍歷重組二叉樹
題目： Given inorder and postorder traversal of a tree, construct the binary tree. Note: You may assume that duplicat
2018-08-28 02:55:54
原创 Leetcode Single Number
題目： Given an array of integers, every element appears twice except for one. Find that single one. Note: Your algor
2018-08-28 02:55:54
2
原创 Leetcode Unique Paths II
題目： Follow up for "Unique Paths": Now consider if some obstacles are added to the grids. How many unique paths wou
2018-08-28 02:55:54
原创 Leetcode House Robber
題目： You are a professional robber planning to rob houses along a street. Each house has a certain amount of money s
2018-08-28 02:55:54