LeetCode - Python Archive achieve [three]

Topic Archive

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Reference Code Address: https://github.com/csujedihy/lc-all-solutions

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Reference problem solution address: https://zhuanlan.zhihu.com/leetcode1024

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Numbering	Title	answer	Difficulty	update status
201	Symmetrical binary tree	tree	simple	✅
202	Binary tree hierarchy traversal	tree	medium
203	Zigzag-level binary tree traversal	tree	medium
104		tree	simple
105		tree	medium
106	From the order sequence postorder binary tree structure	tree	medium
107	Binary tree hierarchy traversal II	tree	simple
108	Ordered arrays to convert binary search tree	tree	simple
109	Ordered list convert binary search tree	tree	medium
110	Balanced binary tree	tree	simple
111	The minimum depth of the binary tree	tree	simple
112	Path sum	tree	simple
113	The sum of the path II	tree	medium
114	Binary tree expands to list	tree	medium
115	Different sequences	动态规划	difficult
116	The next right node pointer to fill each node	tree	medium
117	The next right node pointer II fill each node	tree	medium
118	Pascal's Triangle	Double pointer	simple
119	Pascal's Triangle II	Double pointer	simple
120	Triangles and minimum path	动态规划	medium
121	The best time to stock trading	动态规划	simple
122	The best time to buy and sell stocks II	贪心算法	simple
123	The best time to buy and sell stocks III	动态规划	difficult
124	The maximum path and binary tree	tree	difficult
125	Verify palindromic sequence	Double pointer	simple
126	Word Solitaire II		difficult
127	Word Solitaire		medium
128	The longest continuous sequence		difficult
129	Roots and leaves to node sum of the numbers	tree	medium
130	Area surrounded by		medium
131	Segmentation palindromic sequence		medium
132	Dividing palindromic sequence II		difficult
133	FIG Cloning		medium
134	gas		medium
135	Distribute candy		difficult
136	The number appears only once		simple
137	It appears only once in the Digital II		medium
138	Copy pointer list with Random	List	medium
139	Split words		medium
140	Split words II		difficult
141	Circular linked list		simple
142	Circular linked list II		medium
143	Rearrangements list		medium
144	Preamble binary tree traversal		medium
145	After the binary tree traversal sequence		difficult
146	LRU cache mechanism		medium
147	Insertion Sort to list		medium
148	Sort the list		medium
149	The most points on a straight line		difficult
150	Reverse Polish expression evaluation		medium
151	Flip words in strings		medium
152	Product of the maximum subsequence		medium
153	Find the minimum value in sorted array rotation		medium
154	Find the minimum value in sorted array rotating II		difficult
155	The minimum stack		simple
156	Binary tree upside down		medium
157	Read N characters Read4		simple
158	用 Read4 读取 N 个字符 II		困难
159	至多包含两个不同字符的最长子串		中等
160	相交链表		简单
161	相隔为 1 的编辑距离		中等
162	寻找峰值		中等
163	缺失的区间		中等
164	最大间距		困难
165	比较版本号		中等
166	分数到小数	====	中等
167	两数之和 II - 输入有序数组	====	简单
168	Excel表列名称	====	简单
169	多数元素	二分查找	简单
170	两数之和 III - 数据结构设计		简单
171	Excel表列序号	====	简单
172	阶乘后的零		简单
173	二叉搜索树迭代器	====	中等
174	地下城游戏		困难
175	组合两个表		简单
176	第二高的薪水		简单
177	第N高的薪水		中等
178	分数排名		中等
179	最大数		中等
186	翻转字符串里的单词 II		中等
187	重复的DNA序列		中等
188	买卖股票的最佳时机 IV	====	困难
189	旋转数组	====	简单
190	颠倒二进制位	====	简单
191	位1的个数	====	简单
198	打家劫舍	树	简单
199	二叉树的右视图	树	中等
200	岛屿数量	树	中等