Problems

Blind 75 only150 of 150 problems

#	Title	Difficulty	Category	Statusi	Last
1	Two Sum75	Easy	Arrays & Hashing	New	—
36	Valid Sudoku	Medium	Arrays & Hashing	New	—
49	Group Anagrams75	Medium	Arrays & Hashing	New	—
128	Longest Consecutive Sequence75	Medium	Arrays & Hashing	New	—
217	Contains Duplicate75	Easy	Arrays & Hashing	New	—
238	Product of Array Except Self75	Medium	Arrays & Hashing	New	—
242	Valid Anagram75	Easy	Arrays & Hashing	New	—
271	Encode and Decode Strings75	Medium	Arrays & Hashing	New	—
347	Top K Frequent Elements75	Medium	Arrays & Hashing	New	—
11	Container With Most Water75	Medium	Two Pointers	New	—
15	3Sum75	Medium	Two Pointers	New	—
42	Trapping Rain Water	Hard	Two Pointers	New	—
125	Valid Palindrome75	Easy	Two Pointers	New	—
167	Two Sum II Input Array Is Sorted	Medium	Two Pointers	New	—
3	Longest Substring Without Repeating Characters75	Medium	Sliding Window	New	—
76	Minimum Window Substring75	Hard	Sliding Window	New	—
121	Best Time to Buy And Sell Stock75	Easy	Sliding Window	New	—
239	Sliding Window Maximum	Hard	Sliding Window	New	—
424	Longest Repeating Character Replacement75	Medium	Sliding Window	New	—
567	Permutation In String	Medium	Sliding Window	New	—
20	Valid Parentheses75	Easy	Stack	New	—
22	Generate Parentheses	Medium	Stack	New	—
84	Largest Rectangle In Histogram	Hard	Stack	New	—
150	Evaluate Reverse Polish Notation	Medium	Stack	New	—
155	Min Stack	Medium	Stack	New	—
739	Daily Temperatures	Medium	Stack	New	—
853	Car Fleet	Medium	Stack	New	—
4	Median of Two Sorted Arrays	Hard	Binary Search	New	—
33	Search In Rotated Sorted Array75	Medium	Binary Search	New	—
74	Search a 2D Matrix	Medium	Binary Search	New	—
153	Find Minimum In Rotated Sorted Array75	Medium	Binary Search	New	—
704	Binary Search	Easy	Binary Search	New	—
875	Koko Eating Bananas	Medium	Binary Search	New	—
981	Time Based Key Value Store	Medium	Binary Search	New	—
2	Add Two Numbers	Medium	Linked List	New	—
19	Remove Nth Node From End of List75	Medium	Linked List	New	—
21	Merge Two Sorted Lists75	Easy	Linked List	New	—
23	Merge K Sorted Lists75	Hard	Linked List	New	—
25	Reverse Nodes In K Group	Hard	Linked List	New	—
138	Copy List With Random Pointer	Medium	Linked List	New	—
141	Linked List Cycle75	Easy	Linked List	New	—
143	Reorder List75	Medium	Linked List	New	—
146	LRU Cache	Medium	Linked List	New	—
206	Reverse Linked List75	Easy	Linked List	New	—
287	Find The Duplicate Number	Medium	Linked List	New	—
98	Validate Binary Search Tree75	Medium	Trees	New	—
100	Same Tree75	Easy	Trees	New	—
102	Binary Tree Level Order Traversal75	Medium	Trees	New	—
104	Maximum Depth of Binary Tree75	Easy	Trees	New	—
105	Construct Binary Tree From Preorder And Inorder Traversal75	Medium	Trees	New	—
110	Balanced Binary Tree	Easy	Trees	New	—
124	Binary Tree Maximum Path Sum75	Hard	Trees	New	—
199	Binary Tree Right Side View	Medium	Trees	New	—
226	Invert Binary Tree75	Easy	Trees	New	—
230	Kth Smallest Element In a Bst75	Medium	Trees	New	—
235	Lowest Common Ancestor of a Binary Search Tree75	Medium	Trees	New	—
297	Serialize And Deserialize Binary Tree75	Hard	Trees	New	—
543	Diameter of Binary Tree	Easy	Trees	New	—
572	Subtree of Another Tree75	Easy	Trees	New	—
1448	Count Good Nodes In Binary Tree	Medium	Trees	New	—
208	Implement Trie Prefix Tree75	Medium	Tries	New	—
211	Design Add And Search Words Data Structure75	Medium	Tries	New	—
212	Word Search II75	Hard	Tries	New	—
215	Kth Largest Element In An Array	Medium	Heap / Priority Queue	New	—
295	Find Median From Data Stream75	Hard	Heap / Priority Queue	New	—
355	Design Twitter	Medium	Heap / Priority Queue	New	—
621	Task Scheduler	Medium	Heap / Priority Queue	New	—
703	Kth Largest Element In a Stream	Easy	Heap / Priority Queue	New	—
973	K Closest Points to Origin	Medium	Heap / Priority Queue	New	—
1046	Last Stone Weight	Easy	Heap / Priority Queue	New	—
17	Letter Combinations of a Phone Number	Medium	Backtracking	New	—
39	Combination Sum75	Medium	Backtracking	New	—
40	Combination Sum II	Medium	Backtracking	New	—
46	Permutations	Medium	Backtracking	New	—
51	N Queens	Hard	Backtracking	New	—
78	Subsets	Medium	Backtracking	New	—
79	Word Search75	Medium	Backtracking	New	—
90	Subsets II	Medium	Backtracking	New	—
131	Palindrome Partitioning	Medium	Backtracking	New	—
127	Word Ladder	Hard	Graphs	New	—
130	Surrounded Regions	Medium	Graphs	New	—
133	Clone Graph75	Medium	Graphs	New	—
200	Number of Islands75	Medium	Graphs	New	—
207	Course Schedule75	Medium	Graphs	New	—
210	Course Schedule II	Medium	Graphs	New	—
261	Graph Valid Tree75	Medium	Graphs	New	—
286	Walls And Gates	Medium	Graphs	New	—
323	Number of Connected Components In An Undirected Graph75	Medium	Graphs	New	—
417	Pacific Atlantic Water Flow75	Medium	Graphs	New	—
684	Redundant Connection	Medium	Graphs	New	—
695	Max Area of Island	Medium	Graphs	New	—
994	Rotting Oranges	Medium	Graphs	New	—
269	Alien Dictionary75	Hard	Advanced Graphs	New	—
332	Reconstruct Itinerary	Hard	Advanced Graphs	New	—
743	Network Delay Time	Medium	Advanced Graphs	New	—
778	Swim In Rising Water	Hard	Advanced Graphs	New	—
787	Cheapest Flights Within K Stops	Medium	Advanced Graphs	New	—
1584	Min Cost to Connect All Points	Medium	Advanced Graphs	New	—
5	Longest Palindromic Substring75	Medium	1-D Dynamic Programming	New	—
70	Climbing Stairs75	Easy	1-D Dynamic Programming	New	—
91	Decode Ways75	Medium	1-D Dynamic Programming	New	—
139	Word Break75	Medium	1-D Dynamic Programming	New	—
152	Maximum Product Subarray75	Medium	1-D Dynamic Programming	New	—
198	House Robber75	Medium	1-D Dynamic Programming	New	—
213	House Robber II75	Medium	1-D Dynamic Programming	New	—
300	Longest Increasing Subsequence75	Medium	1-D Dynamic Programming	New	—
322	Coin Change75	Medium	1-D Dynamic Programming	New	—
416	Partition Equal Subset Sum	Medium	1-D Dynamic Programming	New	—
647	Palindromic Substrings75	Medium	1-D Dynamic Programming	New	—
746	Min Cost Climbing Stairs	Easy	1-D Dynamic Programming	New	—
10	Regular Expression Matching	Hard	2-D Dynamic Programming	New	—
62	Unique Paths75	Medium	2-D Dynamic Programming	New	—
72	Edit Distance	Medium	2-D Dynamic Programming	New	—
97	Interleaving String	Medium	2-D Dynamic Programming	New	—
115	Distinct Subsequences	Hard	2-D Dynamic Programming	New	—
309	Best Time to Buy And Sell Stock With Cooldown	Medium	2-D Dynamic Programming	New	—
312	Burst Balloons	Hard	2-D Dynamic Programming	New	—
329	Longest Increasing Path In a Matrix	Hard	2-D Dynamic Programming	New	—
494	Target Sum	Medium	2-D Dynamic Programming	New	—
518	Coin Change II	Medium	2-D Dynamic Programming	New	—
1143	Longest Common Subsequence75	Medium	2-D Dynamic Programming	New	—
45	Jump Game II	Medium	Greedy	New	—
53	Maximum Subarray75	Medium	Greedy	New	—
55	Jump Game75	Medium	Greedy	New	—
134	Gas Station	Medium	Greedy	New	—
678	Valid Parenthesis String	Medium	Greedy	New	—
763	Partition Labels	Medium	Greedy	New	—
846	Hand of Straights	Medium	Greedy	New	—
1899	Merge Triplets to Form Target Triplet	Medium	Greedy	New	—
56	Merge Intervals75	Medium	Intervals	New	—
57	Insert Interval75	Medium	Intervals	New	—
252	Meeting Rooms75	Easy	Intervals	New	—
253	Meeting Rooms II75	Medium	Intervals	New	—
435	Non Overlapping Intervals75	Medium	Intervals	New	—
1851	Minimum Interval to Include Each Query	Hard	Intervals	New	—
43	Multiply Strings	Medium	Math & Geometry	New	—
48	Rotate Image75	Medium	Math & Geometry	New	—
50	Pow(x, n)	Medium	Math & Geometry	New	—
54	Spiral Matrix75	Medium	Math & Geometry	New	—
66	Plus One	Easy	Math & Geometry	New	—
73	Set Matrix Zeroes75	Medium	Math & Geometry	New	—
202	Happy Number	Easy	Math & Geometry	New	—
2013	Detect Squares	Medium	Math & Geometry	New	—
7	Reverse Integer	Medium	Bit Manipulation	New	—
136	Single Number	Easy	Bit Manipulation	New	—
190	Reverse Bits75	Easy	Bit Manipulation	New	—
191	Number of 1 Bits75	Easy	Bit Manipulation	New	—
268	Missing Number75	Easy	Bit Manipulation	New	—
338	Counting Bits75	Easy	Bit Manipulation	New	—
371	Sum of Two Integers75	Medium	Bit Manipulation	New	—