Python Solutions to LeetCode

Solutions - by Index

• # 1 → 99
• # 100 → 199
• # 200 → 299
• # 300 → 399
• # 400 → 499
• # 500 → 599
• # 600 → 699
• # 700 → 799
• # 800 → 899
• # 900 → 999
• # 1000 → 1099
• # 1100 → 1199
• # 1200 → 1299
• # 1300 → 1399
• # 1400 → 1499
• # 1500 → 1599
• # 1600 → 1699
• # 1700 → 1799
• # 1800 → 1899
• # 1900 → 1999
• # 2000 → 2099
• # 2100 → 2199
• # 2200 → 2299
• # 2300 → 2399
• # 2400 → 2499

Solutions - by Algorithms

• Bit Manipulation

• Array

• String

• Linked List

• Stack

• Queue

• Binary Heap

• Tree

• Hash Table

• Math

• Sort

• Two Pointers

• Recursion

• Binary Search

• Binary Search Tree

• Breadth-First Search

• Depth-First Search

• Backtracking

• Dynamic Programming

• Greedy

• Graph

• Geometry

• Simulation

• Design

• Concurrency

• SQL

• Shell Script

Problem 01 - 99

#	Title	Solution	Difficulty	Time	Space	Tags	Notes
01	Two Sum		Medium
02
03	Longest Substring Without Repeating Characters		Medium
04	Median of Two Sorted Arrays		Hard
05	Longest Palindromic Substring		Medium
06	ZigZag Conversion		Easy
07
08
09
10	Regular Expression Matching		Hard
11	Container With Most Water		Medium
12
13
14	Longest Common Prefix		Easy
15	3Sum		Medium
16	3Sum Closest		Medium
17	Letter Combinations of a Phone Number		Medium
18	4Sum		Medium
19	Remove Nth Node From End of List		Easy
20
21
22	Generate Parentheses		Medium
23	Merge k Sorted Lists		Hard
24	Swap Nodes in Pairs		Medium
25	Reverse Nodes in k-Group		Hard
26	Remove Duplicates from Sorted Array		Easy
27
28
29
30	Substring with Concatenation of All Words		Hard
31	Next Permutation		Medium
32	Longest Valid Parentheses		Hard
33	Search in Rotated Sorted Array		Hard
34	Search for a Range		Medium
35
36	Valid Sudoku		Medium
37
38	Count and Say		Easy
39	Combination Sum		Medium
40	Combination Sum II		Medium
41	First Missing Positive		Hard
42	Trapping Rain Water		Hard
43
44	Wildcard Matching		Hard
45	Jump Game II		Hard
46	Permutations		Medium
47
48	Rotate Image		Medium
49
50
51
52
53	Maximum Subarray		Medium
54	Spiral Matrix		Medium
55
56	Merge Intervals		Hard
57	Insert Interval		Hard
58
59
60	Permutation Sequence		Medium
61	Rotate List		Medium
62	Unique Paths		Medium
63	Unique Paths II		Medium
64	Minimum Path Sum		Medium
65	Valid Number		Easy
66	Plus One		Easy
67	Add Binary		Easy
66
68
69
70	Climbing Stairs		Easy
71	Simplify Path		Medium
72	Edit Distance		Hard
73	Set Matrix Zeroes		Medium
74	Search a 2D Matrix		Medium
75	Sort Colors		Medium
76
77
78	Subsets		Medium
79	Word Search		Medium
80	Remove Duplicates from Sorted Array II		Medium
81	Search in Rotated Sorted Array II		Medium
82	Remove Duplicates from Sorted List II		Medium
83	Remove Duplicates from Sorted List		Easy
84
85	Maximal Rectangle		Hard
86	Partition List		Medium
87	Scramble String		Hard
88
89
90	Subsets II		Medium
91	Decode Ways		Medium
92	Reverse Linked List II		Medium
93	Restore IP Addresses		Medium
94	Binary Tree Inorder Traversal		Medium
95	Unique Binary Search Trees II		Medium
96
97	Interleaving String		Hard
98	Validate Binary Search Tree		Medium
99	Recover Binary Search Tree		Hard