LeetCode

LeetCode Solution in C#

High Frequency Problems

#	Title	VIP	Difficulty
1	Two Sum	Normal	Easy
2	Add Two Numbers	Normal	Medium
3	Longest Substring Without Repeating Characters	Normal	Medium
4	Median of Two Sorted Arrays	Normal	Hard
11	Container With Most Water	Normal	Medium
146	LRU Cache	Normal	Hard
9	Palindrome Number	Normal	Easy
13	Roman to Integer	Normal	Easy
20	Valid Parentheses	Normal	Easy
7	Reverse Integer	Normal	Easy
53	Maximum Subarray	Normal	Easy
5	Longest Palindromic Substring	Normal	Medium
14	Longest Common Prefix	Normal	Easy
23	Merge k Sorted Lists	Normal	Hard
200	Number of Islands	Normal	Medium
771	Jewels and Stones	Normal	Easy
273	Integer to English Words	Normal	Hard
344	Reverse String	Normal	Easy
56	Merge Intervals	Normal	Medium
15	3Sum	Normal	Medium
21	Merge Two Sorted Lists	Normal	Easy
42	Trapping Rain Water	Normal	Hard
206	Reverse Linked List	Normal	Easy
138	Copy List with Random Pointer	Normal	Medium
141	Linked List Cycle	Normal	Easy
121	Best Time to Buy and Sell Stock	Normal	Easy
10	Regular Expression Matching	Normal	Hard
8	String to Integer (atoi)	Normal	Medium
819	Most Common Word	Normal	Easy
12	Integer to Roman	Normal	Medium
238	Product of Array Except Self	Normal	Medium
88	Merge Sorted Array	Normal	Easy
412	Fizz Buzz	Normal	Easy
33	Search in Rotated Sorted Array	Normal	Medium
17	Letter Combinations of a Phone Number	Normal	Medium
31	Next Permutation	Normal	Medium
139	Word Break	Normal	Medium
681	Next Closest Time	Prime	Medium
192	Word Frequency	Normal	Medium
49	Group Anagrams	Normal	Medium
347	Top K Frequent Elements	Normal	Medium
41	First Missing Positive	Normal	Hard
151	Reverse Words in a String	Normal	Medium
283	Move Zeroes	Normal	Easy
683	K Empty Slots	Prime	Hard
76	Minimum Window Substring	Normal	Hard
253	Meeting Rooms II	Prime	Medium
149	Max Points on a Line	Normal	Hard
297	Serialize and Deserialize Binary Tree	Normal	Hard
204	Count Primes	Normal	Easy
695	Max Area of Island	Normal	Easy
65	Valid Number	Normal	Hard
26	Remove Duplicates from Sorted Array	Normal	Easy
54	Spiral Matrix	Normal	Medium
6	ZigZag Conversion	Normal	Medium
50	Pow(x, n)	Normal	Medium
564	Find the Closest Palindrome	Normal	Hard
19	Remove Nth Node From End of List	Normal	Medium
136	Single Number	Normal	Easy
91	Decode Ways	Normal	Medium
16	3Sum Closest	Normal	Medium
70	Climbing Stairs	Normal	Easy
535	Encode and Decode TinyURL	Normal	Medium
29	Divide Two Integers	Normal	Medium
122	Best Time to Buy and Sell Stock II	Normal	Easy
66	Plus One	Normal	Easy
289	Game of Life	Normal	Medium
46	Permutations	Normal	Medium
237	Delete Node in a Linked List	Normal	Easy
25	Reverse Nodes in k-Group	Normal	Hard
22	Generate Parentheses	Normal	Medium
32	Longest Valid Parentheses	Normal	Hard
193	Valid Phone Numbers	Normal	Easy
224	Basic Calculator	Normal	Hard
98	Validate Binary Search Tree	Normal	Medium
617	Merge Two Binary Trees	Normal	Easy
124	Binary Tree Maximum Path Sum	Normal	Hard
301	Remove Invalid Parentheses	Normal	Hard
169	Majority Element	Normal	Easy
72	Edit Distance	Normal	Hard
92	Reverse Linked List II	Normal	Medium
128	Longest Consecutive Sequence	Normal	Hard
609	Find Duplicate File in System	Normal	Medium
215	Kth Largest Element in an Array	Normal	Medium
227	Basic Calculator II	Normal	Medium
560	Subarray Sum Equals K	Normal	Medium
127	Word Ladder	Normal	Medium
269	Alien Dictionary	Prime	Hard
103	Binary Tree Zigzag Level Order Traversal	Normal	Medium
93	Restore IP Addresses	Normal	Medium
403	Frog Jump	Normal	Hard
155	Min Stack	Normal	Easy
79	Word Search	Normal	Medium
158	Read N Characters Given Read4 II - Call multiple times	Prime	Hard
336	Palindrome Pairs	Normal	Hard
38	Count and Say	Normal	Easy
300	Longest Increasing Subsequence	Normal	Medium
234	Palindrome Linked List	Normal	Easy
140	Word Break II	Normal	Hard
102	Binary Tree Level Order Traversal	Normal	Medium

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