LeetCode Question with Detailed Answers

The following table are the LeetCode questions that I have been solved.

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No.	Question Number	Question	Level	Topic	Date
1	46	Permutations	Medium	Backtracking	2021-04-29
2	5	Longest Palindromic Substring	Medium	DP	2021-01-24
3	4	Median of Two Sorted Arrays	Hard	Binary Search	2021-01-23
4	3	Longest Substring Without Repeating Characters	Medium	Two Pointers	2021-01-22
5	2	Add Two Numbers	Medium	Linked List	2021-01-21
6	1	Two Sum	Easy	Hash Table	2021-01-20
7	1290	Convert Binary Number in a Linked List to Integer	Easy	Bit Manipulation	2020-11-01
8	252	Meeting Rooms	Easy	Greedy	2020-10-31
9	253	Meeting Rooms II	Medium	Greedy	2020-10-30
10	213	House Robber II	Medium	DP	2020-10-14
11	21	Merge Two Sorted Lists	Easy	Linked List	2020-10-13
12	1616	Split Two Strings to Make Palindrome	Medium	Greedy	2020-10-13
13	859	Buddy Strings	Easy	String	2020-10-12
14	449	Serialize and Deserialize BST	Medium	Tree	2020-10-11
15	1081	Smallest Subsequence of Distinct Characters	Medium	Greedy	2020-10-10
16	316	Remove Duplicate Letters	Medium	Greedy	2020-10-09
17	704	Binary Search	Easy	Binary Search	2020-10-08
18	61	Rotate List	Medium	Linked List	2020-10-07
19	701	Insert into a Binary Search Tree	Medium	Tree	2020-10-06
20	1009	Complement of Base 10 Integer	Easy	Bit Manipulation	2020-10-05
21	39	Combination Sum	Medium	Backtracking	2020-10-04
22	476	Number Complement	Easy	Bit Manipulation	2020-10-03
23	170	Two Sum III - Data structure design	Easy	Hash Table	2020-10-02
24	452	Minimum Number of Arrows to Burst Balloons	Medium	Greedy	2020-10-01
25	148	Sort List	Medium	Linked List	2020-09-30
26	198	House Robber	Easy	DP	2020-09-29
27	949	Largest Time for Given Digits	Easy	Math	2020-09-01
28	518	Coin Change 2	Medium	DP	2020-06-07
29	406	Queue Reconstruction by Height	Medium	Greedy	2020-06-06
30	1472	Design Browser History	Medium	Design	2020-06-06
31	1471	The k Strongest Values in an Array	Medium	Array	2020-06-06
32	1470	Shuffle the Array	Easy	Array	2020-06-06
33	528	Random Pick with Weight	Medium	Binary Search	2020-06-05
34	344	Reverse String	Easy	Two Pointers	2020-06-04
35	1029	Two City Scheduling	Easy	Greedy	2020-06-03
36	965	Univalued Binary Tree	Easy	Tree	2020-06-02
37	237	Delete Node in a Linked List	Easy	Linked List	2020-06-02
38	226	Invert Binary Tree	Easy	Tree	2020-06-01
39	72	Edit Distance	Hard	DP	2020-05-31
40	1466	Reorder Routes to Make All Paths Lead to the City Zero	Medium	Tree	2020-05-31
41	1465	Maximum Area of a Piece of Cake After Horizontal and Vertical Cuts	Medium	Array	2020-05-31
42	1464	Maximum Product of Two Elements in an Array	Easy	Array	2020-05-31
43	973	K Closest Points to Origin	Medium	Sort	2020-05-30
44	260	Single Number III	Medium	Bit Manipulation	2020-05-30
45	207	Course Schedule	Medium	Topological Sort	2020-05-29
46	137	Single Number II	Medium	Bit Manipulation	2020-05-29
47	136	Single Number	Easy	Bit Manipulation	2020-05-29
48	338	Counting Bits	Medium	Bit Manipulation	2020-05-28
49	231	Power of Two	Easy	Bit Manipulation	2020-05-28
50	191	Number of 1 Bits	Easy	Bit Manipulation	2020-05-28
51	190	Reverse Bits	Easy	Bit Manipulation	2020-05-28
52	886	Possible Bipartition	Medium	Graph	2020-05-27
53	785	Is Graph Bipartite?	Medium	Graph	2020-05-27
54	525	Contiguous Array	Medium	Hash Table	2020-05-26
55	325	Maximum Size Subarray Sum Equals k	Medium	Hash Table	2020-05-26
56	1143	Longest Common Subsequence	Medium	DP	2020-05-25
57	1035	Uncrossed Lines	Medium	DP	2020-05-25
58	266	Palindrome Permutation	Easy	Hash Table	2020-05-24
59	1008	Construct Binary Search Tree from Preorder Traversal	Medium	Tree	2020-05-24
60	986	Interval List Intersections	Medium	Two Pointers	2020-05-23
61	1458	Max Dot Product of Two Subsequences	Hard	DP	2020-05-23
62	1457	Pseudo-Palindromic Paths in a Binary Tree	Medium	Tree	2020-05-23
63	1456	Maximum Number of Vowels in a Substring of Given Length	Medium	Sliding Window	2020-05-23
64	1455	Check If a Word Occurs As a Prefix of Any Word in a Sentence	Easy	String	2020-05-23
65	451	Sort Characters By Frequency	Medium	Hash Table	2020-05-22
66	221	Maximal Square	Medium	DP	2020-05-21
67	1277	Count Square Submatrices with All Ones	Medium	DP	2020-05-21
68	230	Kth Smallest Element in a BST	Medium	Binary Search	2020-05-20
69	901	Online Stock Span	Medium	Stack	2020-05-19
70	567	Permutation in String	Medium	Hash Table	2020-05-18
71	438	Find All Anagrams in a String	Medium	Hash Table	2020-05-17
72	328	Odd Even Linked List	Medium	Linked List	2020-05-16
73	1452	People Whose List of Favorite Companies Is Not a Subset of Another List	Medium	String	2020-05-16
74	1451	Rearrange Words in a Sentence	Medium	String	2020-05-16
75	1450	Number of Students Doing Homework at a Given Time	Easy	Array	2020-05-16
76	121	Best Time to Buy and Sell Stock	Easy	DP	2020-05-16
77	918	Maximum Sum Circular Subarray	Medium	Array	2020-05-15
78	53	Maximum Subarray	Easy	DP	2020-05-15
79	208	Implement Trie (Prefix Tree)	Medium	Trie	2020-05-14
80	402	Remove K Digits	Medium	Stack	2020-05-13
81	540	Single Element in a Sorted Array	Medium	Binary Search	2020-05-12

LeetCode Question with Detailed Answers

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