Python solution for Leetcode

Python solution of problems from LeetCode.

LeetCode Algorithm

Problems 300-400

#	Title	Solution	Difficulty
387	First Unique Character in a String	Python	Easy
380	Insert Delete GetRandom O(1)	Python	Hard
378	Kth Smallest Element in a Sorted Matrix	Python	Medium
350	Intersection of Two Arrays II	Python	Easy
347	Top K Frequent Elements	Python	Medium
334	Increasing Triplet Subsequence	Python	Medium
332	Reconstruct Itinerary	Python	Medium
329	Longest Increasing Path in a Matrix	Python	Medium
328	Odd Even Linked List	Python	Easy
326	Power of Three	Python	Easy
322	Coin Change	Python	Medium
315	Count of Smaller Numbers After Self	Python	Hard
301	Remove Invalid Parentheses	Python	Hard

Problems 200-300q

#	Title	Solution	Difficulty
300	Longest Increasing Subsequence	Python	Medium
297	Serialize and Deserialize Binary Tree	Python	Hard
295	Find Median from Data Stream	Python	Hard
289	Game of Life	Python	Medium
287	Find the Duplicate Number	Python	Hard
285	Inorder Successor in BST	Python	Medium
283	Move Zeros	Python	Easy
279	Perfect Squares	Python	Medium
268	Missing Number	Python	Easy
257	Binary Tree PathsPython	Easy
253	Meeting Rooms II	Python	Medium
240	Search a 2D Matrix II	Python	Medium
239	Sliding Window Maximum	Python	Hard
238	Product of Array Except Self	Python	Medium
236	Lowest Common Ancestor of a Binary Tree	Python	Medium
235	Lowest Common Ancestor of a Binary Search Tree	Python	Easy
234	Palindrome Linked List	Python	Easy
230	Kth Smallest Element in a BST	Python	Medium
226	Invert Binary Tree	Python	Easy
215	Kth Largest Element in an Array	Python	Medium
210	Course Schedule II	Python	Medium
208	Implement Trie (Prefix Tree)	Python	Medium
207	Course Schedule	Python	Medium
206	Reverse Linked List	Python	Easy
203	Remove Linked List Elements	Python	Easy
200	Number of Islands	Python	Medium

Problems 100-200

#	Title	Solution	Difficulty
199	Binary Tree Right Side View	Python	Medium
191	Number of 1 Bits	Python	Easy
179	Largest Number	Python	Medium
173	Binary Search Tree Iterator	Python	Medium
162	Find Peak Element	Python	Medium
160	Intersection of Two Linked Lists	Python	Easy
155	Min Stack	Python	Easy
152	Maximum Product Subarray	Python	Medium
150	Evaluate Reverse Polish Notation	Python	Medium
148	Sort List	Python	Medium
147	Insertion Sort List	Python	Medium
146	LRU Cache	Python	Hard
145	Binary Tree Postorder Traversal	Python	Hard
144	Binary Tree Preorder Traversal	Python	Medium
143	Reorder List	Python	Medium
142	Linked List Cycle II	Python	Medium
141	Linked List Cycle	Python	Medium
139	Word Break	Python	Medium
134	Gas Station	Python	Medium
132	Palindrome Partitioning II	Python	Hard
131	Palindrome Partitioning	Python	Medium
130	Surrounded Regions	Python	Medium
129	Sum Root to Leaf Numbers	Python	Medium
128	Longest Consecutive Sequence	Python	Hard
127	Word Ladder	Python	Medium
125	Valid Palindrome	Python	Easy
123	Best Time to Buy and Sell Stock III	Python	Hard
120	Triangle	Python	Medium
119	Pascal's Triangle II	Python	Easy
118	Pascal's Triangle	Python	Easy
117	Populating Next Right Pointers in Each Node II	Python	Hard
116	Populating Next Right Pointers in Each Node	Python	Medium
115	Distinct Subsequences	Python	Hard
113	Path Sum II	Python	Medium
112	Path Sum	Python	Easy
111	Minimum Depth of Binary Tree	Python	Easy
108	Convert Sorted Array to Binary Search Tree	Python	Easy
107	Binary Tree Level Order Traversal II	Python	Easy
106	Construct Binary Tree from Inorder and Postorder Traversal	Python	Medium
105	Construct Binary Tree from Preorder and Inorder Traversal	Python	Medium
103	Binary Tree Zigzag Level Order Traversal	Python	Medium
102	Binary Tree Level Order Traversal	Python	Easy
101	Symmetric Tree	Python	Easy
100	Same Tree	Python	Easy

Problems 1-100

#	Title	Solution	Difficulty
99	Recover Binary Search Tree	Python	Hard
98	Validate Binary Search Tree	Python	Medium
97	Interleaving String	Python	Hard
95	Unique Binary Search Trees II	Python	Medium
94	Binary Tree Inorder Traversal	Python	Medium
93	Restore IP Addresses	Python	Medium
92	Reverse Linked List II	Python	Medium
91	Decode Ways	Python	Medium
90	Subsets II	Python	Medium
87	Scramble String	Python	Hard
86	Partition List	Python	Medium
85	Maximal Rectangle	Python	Hard
83	Remove Duplicates from Sorted List	Python	Easy
82	Remove Duplicates from Sorted List II	Python	Medium
81	Search in Rotated Sorted Array II	Python	Medium
80	Remove Duplicates from Sorted Array II	Python	Medium
79	Word Search	Python	Medium
78	Subsets	Python	Medium
75	Sort Colors	Python	Medium
74	Search a 2D Matrix	Python	Medium
73	Set Matrix Zeroes	Python	Medium
72	Edit Distance	Python	Hard
71	Simplify Path	Python	Medium
70	Climbing Stairs	Python	Easy
67	Add Binary	Python	Easy
66	Plus One	Python	Easy
65	Valid Number	Python	Easy
64	Minimum Path Sum	Python	Medium
63	Unique Paths II	Python	Medium
62	Unique Paths	Python	Medium
61	Rotate List	Python	Medium
60	Permutation Sequence	Python	Medium
57	Insert Interval	Python	Hard
56	Merge Intervals	Python	Hard
54	Spiral Matrix	Python	Medium
53	Maximum Subarray	Python	Medium
48	Rotate Image	Python	Medium
46	Permutations	Python	Medium
45	Jump Game II	Python	Hard
44	Wildcard Matching	Python	Hard
42	Trapping Rain Water	Python	Hard
41	First Missing Positive	Python	Hard
40	Combination Sum II	Python	Medium
39	Combination Sum	Python	Medium
38	Count and Say	Python	Easy
34	Search for a Range	Python	Medium
33	Search in Rotated Sorted Array	Python	Hard
32	Longest Valid Parentheses	Python	Hard
31	Next Permutation	Python	Medium
30	Substring with Concatenation of All Words	Python	Hard
26	Remove Duplicates from Sorted Array	Python	Easy
25	Reverse Nodes in k-Group	Python	Hard
24	Swap Nodes in Pairs	Python	Medium
23	Merge k Sorted Lists	Python	Hard
22	Generate Parentheses	Python	Medium
19	Remove Nth Node From End of List	Python	Easy
18	4Sum	Python	Medium
17	Letter Combinations of a Phone Number	Python	Medium
16	3Sum Closest	Python	Medium
15	3Sum	Python	Medium
11	Container With Most Water	Python	Medium
10	Regular Expression Matching	Python	Hard
6	ZigZag Conversion	Python	Easy
5	Longest Palindromic Substring	Python	Medium
4	Median of Two Sorted Arrays	Python	Hard
3	Longest Substring Without Repeating Characters	Python	Medium
1	Two Sum	Python	Medium