Binary Tree Level Order Traversal 二叉樹層序遍歷 Example BFS方法
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leetcode-tree-[Medisum]-102-Binary -Tree Inorder Traversal
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leetcode-tree-94-Binary Tree Inorder Traversal
94. Binary Tree Inorder Traversal Binary Tree Inorder Traversal中序遍歷二叉樹 注意二叉樹并不是左節點小于父節點...
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leetcode-tree-113- Path Sum2
113. Path Sum II Given a binary tree and a sum, find all root-to-leaf paths where each ...
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leetcode-tree-112- Path Sum
Path Sum Given a binary tree and a sum, determine if the tree has a root-to-leaf path s...
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leetcode-tree-111- Minimum Depth of Binary Tree
題目:Balanced Binary Tree Minimum Depth of Binary Tree Example 1Given the following tree ...
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leetcode-tree-110- Balanced Binary Tree
題目:Balanced Binary Tree Given a binary tree, determine if it is height-balanced.a binar...
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leetcode-tree-108. Convert Sorted Array to Binary Search Tree
題目 Given an array where elements are sorted in ascending order, convert it to a height ...
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leetcode-tree-107-Binary Tree Level Order Traversal II
107 Binary Tree Level Order Traversal II 題目描述 Given a binary tree, return the bottom-up...
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leetcode-Easy-32-tree-sqrt
題目 Compute and return the square root of x, where x is guaranteed to be a non-negative ...
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leetcode-Easy-31-Tree- Maximum Depth of Binary Tree
題目:找出二叉樹的最大深度 Given a binary tree, find its maximum depth.The maximum depth is the numb...
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leetcode-Easy-30-Tree-Symmetric Tree
題目判斷二叉樹是對稱 Given a binary tree, check whether it is a mirror of itself (ie, symmetric a...
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leetcode-Easy-29-Tree-Same tree
題目判斷二叉樹是否完全一樣 Given two binary trees, write a function to check if they are the same or...
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leetcode-Easy-27-DP-Best Time to Buy and Sell Stock
題目 Say you have an array for which the ith element is the price of a given stock on day...
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leetcode-Easy-26-DP-Climbing Stairs
題目 You are climbing a stair case. It takes n steps to reach to the top.Each time you ca...
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leetcode-Easy-Medium-25-數組- Rotate Array
題目 Given an array, rotate the array to the right by k steps, where k is non-negative. 將...
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leetcode-Medium-24-數組-Rotate Image
題目 You are given an n x n 2D matrix representing an image.Rotate the image by 90 degree...
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leetcode-Medium-22期-數組-Spiral Matrix
題目 Given a matrix of m x n elements (m rows, n columns), return all elements of the mat...
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leetcode-hard-21期-數組-Trapping Rain Water
題目 Given n non-negative integers representing an elevation map where the width of each ...
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leetcode-Medium-20期末-數組-Search in Rotated Sorted Array
題目 Suppose an array sorted in ascending order is rotated at some pivot unknown to you b...
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leetcode-hard-19期-數組- First Missing Positive
題目 Given an unsorted integer array, find the smallest missing positive integer. 找出數組中缺少...