原创 Unity開發-3D數學基礎
一 3D數學介紹 1D——數軸。 2D——兩條相交數軸，兩條數軸度量單位相等則稱爲笛卡爾座標系。 3D——空間直角座標系，分爲左手/右手座標系：大拇指 - x軸，食指 - y軸， 其餘三指
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原创 十六週
19. Remove Nth Node From End of List Given a linked list, remove the nth node from the end of list and return its head.
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原创 第十四周
91. Decode Ways A message containing letters from A-Z is being encoded to numbers using the following mapping: 'A' -> 1
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原创 k生成樹問題
k-生成樹（k-SPANDING TREE）問題是這樣的： 輸入：無向圖G=（V,E）。 輸出：G的生成樹，其中所有節點度數不超過k。 如果該樹存在，請證明對任意k>=2: (a)k-生成樹問題是搜索問題。 搜索問題要求：已知起始狀
2018-09-02 07:58:18
原创 第八週——135. Candy
135. Candy There are N children standing in a line. Each child is assigned a rating value. You are giving candies to th
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原创 第十三週
Given a string which contains only lowercase letters, remove duplicate letters so that every letter appear once and onl
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原创 第十五週
87. Scramble String Given a string s1, we may represent it as a binary tree by partitioning it to two non-empty substri
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原创 第十週
63. Unique Paths II Now consider if some obstacles are added to the grids. How many unique paths would there be? An ob
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原创 算法第二週： Divide and Conquer-分治算法
分治算法基本思想：將問題分解爲k個子問題，每個子問題相互獨立且與原問題性質相同，求得子問題的解即可求得原問題的解。若子問題還較難以解決，就遞歸的分解子問題，直到可以找到簡單的求解方法。 53. Maximum Subarray F
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原创 算法第五週——貪心算法
55. Jump Game Given an array of non-negative integers, you are initially positioned at the first index of the array.Eac
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原创 第九周
62. Unique Paths A robot is located at the top-left corner of a m x n grid (marked 'Start' in the diagram below). The r
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原创 第十二週
Given a collection of candidate numbers (C) and a target number (T), find all unique combinations in C where the candid
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原创 算法第六週——回溯
17. Letter Combinations of a Phone Number Given a digit string, return all possible letter combinations that the number
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原创 第十一週
575. Distribute Candies Given an integer array with even length, where different numbers in this array represent differ
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原创 Leetcode-133. Clone Graph
133. Clone Graph Clone an undirected graph. Each node in the graph contains a label and a list of its neighbors. We us
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