Given two binary trees, write a function to check if they are the same or not. Two binary trees are considered the same if they are structurally ...
Same Tree Given two binary trees, write a function to check if they are equal or not. Two binary trees are considered equal if they are structurally identical and the nodes have the same value. 解法一:遞歸 ...
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Given two binary trees, write a function to check if they are the same or not. Two binary trees are considered the same if they are structurally ...
遞歸實現 static public bool IsSameTree(TreeNode root1, TreeNode root2) { if (r ...
原題地址:https://oj.leetcode.com/problems/same-tree/ 題意:判斷兩棵樹是否是同一棵樹。 解題思路:這題比較簡單。用遞歸來做。首先判斷兩個根節點的值是否相同,如果相同,遞歸判斷根的左右子樹。 代碼: ...
Binary Search Tree Iterator Implement an iterator over a binary search tree (BST). Your iterator will be initialized with the root node of a BST. ...
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 ...
Valid Anagram Given two strings s and t, write a function to determine if t is an anagram of s. Fo ...
Combination Sum II Given a collection of candidate numbers (C) and a target number (T), find all un ...
Palindrome Linked List Given a singly linked list, determine if it is a palindrome. Follow up:Coul ...