#	Title	Solution	Acceptance	Difficulty	Topics
0001	Two Sum	C++ Java Kotlin	44.52%	Easy	Array | Hash Table
0002	Add Two Numbers	C++ Java	31.78%	Medium	Linked List | Math
0003	Longest Substring Without Repeating Characters	C++ Java Kotlin	28.84%	Medium	Hash Table | Two Pointers | String | Sliding Window
0004	Median of Two Sorted Arrays	C++ Java	27.26%	Hard	Array | Binary Search | Divide and Conquer
0005	Longest Palindromic Substring	C++ Java	27.89%	Medium	String | Dynamic Programming
0006	ZigZag Conversion	C++ Java	33.20%	Medium	String
0007	Reverse Integer	C++ Java Kotlin	25.49%	Easy	Math
0008	String to Integer (atoi)	C++	14.80%	Medium	Math | String
0009	Palindrome Number	C++ Java Kotlin	44.84%	Easy	Math
0011	Container With Most Water	Java	46.61%	Medium	Array | Two Pointers
0012	Integer to Roman	C++ Java	52.06%	Medium	Math | String
0013	Roman to Integer	C++ Java	53.25%	Easy	Math | String
0014	Longest Common Prefix	Java	34.12%	Easy	String
0015	3Sum	Java	24.74%	Medium	Array | Two Pointers
0016	3Sum Closest	Java	45.75%	Medium	Array | Two Pointers
0017	Letter Combinations of a Phone Number	C++ Java	42.94%	Medium	String | Backtracking
0018	4Sum	Java	31.47%	Medium	Array | Hash Table | Two Pointers
0019	Remove Nth Node From End of List	Java	34.59%	Medium	Linked List | Two Pointers
0020	Valid Parentheses	Java	37.22%	Easy	String | Stack
0021	Merge Two Sorted Lists	Java	48.81%	Easy	Linked List
0022	Generate Parentheses	C++	56.94%	Medium	String | Backtracking
0023	Merge k Sorted Lists	C++ Java	35.99%	Hard	Linked List | Divide and Conquer | Heap
0024	Swap Nodes in Pairs	C++ Java	46.26%	Medium	Linked List
0025	Reverse Nodes in k-Group	C++	37.82%	Hard	Linked List
0026	Remove Duplicates from Sorted Array	C++ Java	41.87%	Easy	Array | Two Pointers
0027	Remove Element	C++ Java Kotlin	45.55%	Easy	Array | Two Pointers
0028	Implement strStr()	C++ Java	32.87%	Easy	Two Pointers | String
0029	Divide Two Integers	C++ Java	16.15%	Medium	Math | Binary Search
0031	Next Permutation	C++	31.04%	Medium	Array
0035	Search Insert Position	Java	41.18%	Easy	Array | Binary Search
0039	Combination Sum	C++ Java	50.64%	Medium	Array | Backtracking
0040	Combination Sum II	C++ Java	43.39%	Medium	Array | Backtracking
0041	First Missing Positive	Java	29.69%	Hard	Array
0045	Jump Game II	C++	28.76%	Hard	Array | Greedy
0046	Permutations	C++ Java	57.33%	Medium	Backtracking
0047	Permutations II	C++	42.12%	Medium	Backtracking
0048	Rotate Image	C++ Java	50.50%	Medium	Array
0049	Group Anagrams	C++ Java	49.22%	Medium	Hash Table | String
0050	Pow(x, n)	C++ Java	28.54%	Medium	Math | Binary Search
0053	Maximum Subarray	C++ Java	44.52%	Easy	Array | Divide and Conquer | Dynamic Programming
0054	Spiral Matrix	C++ Java	31.37%	Medium	Array
0055	Jump Game	C++ Java	32.55%	Medium	Array | Greedy
0059	Spiral Matrix II	C++ Java	48.23%	Medium	Array
0062	Unique Paths	C++ Java	49.11%	Medium	Array | Dynamic Programming
0063	Unique Paths II	C++ Java	33.68%	Medium	Array | Dynamic Programming
0064	Minimum Path Sum	C++ Java	48.56%	Medium	Array | Dynamic Programming
0066	Plus One	Java	41.65%	Easy	Array
0069	Sqrt(x)	C++ Java	32.07%	Easy	Math | Binary Search
0070	Climbing Stairs	C++ Java	45.04%	Easy	Dynamic Programming
0072	Edit Distance	C++ Java	39.33%	Hard	String | Dynamic Programming
0073	Set Matrix Zeroes	C++ Java	40.81%	Medium	Array
0075	Sort Colors	C++ Java	43.21%	Medium	Array | Two Pointers | Sort
0078	Subsets	C++ Java	54.98%	Medium	Array | Backtracking | Bit Manipulation
0089	Gray Code	C++ Java	46.69%	Medium	Backtracking
0090	Subsets II	C++ Java	43.64%	Medium	Array | Backtracking
0093	Restore IP Addresses	C++	32.39%	Medium	String | Backtracking
0098	Validate Binary Search Tree	C++ Java	26.26%	Medium	Tree | Depth-first Search
0100	Same Tree	Java	50.72%	Easy	Tree | Depth-first Search
0101	Symmetric Tree	C++	44.36%	Easy	Tree | Depth-first Search | Breadth-first Search
0104	Maximum Depth of Binary Tree	C++	62.03%	Easy	Tree | Depth-first Search
0111	Minimum Depth of Binary Tree	C++	35.86%	Easy	Tree | Depth-first Search | Breadth-first Search
0113	Path Sum II	C++	42.14%	Medium	Tree | Depth-first Search
0121	Best Time to Buy and Sell Stock	C++ Java	48.18%	Easy	Array | Dynamic Programming
0122	Best Time to Buy and Sell Stock II	C++ Java	53.02%	Easy	Array | Greedy
0128	Longest Consecutive Sequence	C++	42.65%	Hard	Array | Union Find
0130	Surrounded Regions	C++	23.94%	Medium	Depth-first Search | Breadth-first Search | Union Find
0134	Gas Station	C++ Java	34.97%	Medium	Greedy
0136	Single Number	C++ Java	61.41%	Easy	Hash Table | Bit Manipulation
0137	Single Number II	C++	47.06%	Medium	Bit Manipulation
0141	Linked List Cycle	Java	38.08%	Easy	Linked List | Two Pointers
0142	Linked List Cycle II	Java	33.42%	Medium	Linked List | Two Pointers
0146	LRU Cache	C++ Java	27.22%	Medium	Design
0148	Sort List	Java	37.17%	Medium	Linked List | Sort
0167	Two Sum II - Input array is sorted	C++	51.34%	Easy	Array | Two Pointers | Binary Search
0169	Majority Element	C++ Java	54.07%	Easy	Array | Divide and Conquer | Bit Manipulation
0187	Repeated DNA Sequences	C++ Java	36.88%	Medium	Hash Table | Bit Manipulation
0190	Reverse Bits	C++ Java	32.86%	Easy	Bit Manipulation
0191	Number of 1 Bits	C++ Java	44.77%	Easy	Bit Manipulation
0198	House Robber	C++ Java	41.30%	Easy	Dynamic Programming
0201	Bitwise AND of Numbers Range	C++	36.51%	Medium	Bit Manipulation
0209	Minimum Size Subarray Sum	C++	35.59%	Medium	Array | Two Pointers | Binary Search
0215	Kth Largest Element in an Array	C++ Java	49.71%	Medium	Divide and Conquer | Heap
0216	Combination Sum III	C++ Java	52.97%	Medium	Array | Backtracking
0217	Contains Duplicate	C++ Java	53.28%	Easy	Array | Hash Table
0230	Kth Smallest Element in a BST	Java	53.25%	Medium	Binary Search | Tree
0231	Power of Two	Java	42.33%	Easy	Math | Bit Manipulation
0237	Delete Node in a Linked List	C++ Java	55.45%	Easy	Linked List
0238	Product of Array Except Self	C++ Java	56.50%	Medium	Array
0240	Search a 2D Matrix II	C++ Java	41.38%	Medium	Binary Search | Divide and Conquer
0260	Single Number III	C++	58.13%	Medium	Bit Manipulation
0263	Ugly Number	C++ Java	40.90%	Easy	Math
0268	Missing Number	Java	49.22%	Easy	Array | Math | Bit Manipulation
0279	Perfect Squares	C++ Java	43.03%	Medium	Math | Dynamic Programming | Breadth-first Search
0283	Move Zeroes	Java	55.11%	Easy	Array | Two Pointers
0287	Find the Duplicate Number	C++	50.97%	Medium	Array | Two Pointers | Binary Search
0303	Range Sum Query - Immutable	C++ Java	39.64%	Easy	Dynamic Programming
0318	Maximum Product of Word Lengths	C++ Java	49.19%	Medium	Bit Manipulation
0338	Counting Bits	C++ Java	65.63%	Medium	Dynamic Programming | Bit Manipulation
0342	Power of Four	C++ Java	40.69%	Easy	Bit Manipulation
0343	Integer Break	C++	48.48%	Medium	Math | Dynamic Programming
0344	Reverse String	C++ Java	64.03%	Easy	Two Pointers | String
0349	Intersection of Two Arrays	C++	56.60%	Easy	Hash Table | Two Pointers | Binary Search | Sort
0357	Count Numbers with Unique Digits	C++ Java	47.40%	Medium	Math | Dynamic Programming | Backtracking
0371	Sum of Two Integers	C++	50.79%	Easy	Bit Manipulation
0387	First Unique Character in a String	C++ Java	50.64%	Easy	Hash Table | String
0389	Find the Difference	C++	53.66%	Easy	Hash Table | Bit Manipulation
0392	Is Subsequence	C++ Java	47.48%	Easy	Binary Search | Dynamic Programming | Greedy
0397	Integer Replacement	C++ Java	31.85%	Medium	Math | Bit Manipulation
0401	Binary Watch	C++	45.78%	Easy	Backtracking | Bit Manipulation
0412	Fizz Buzz	C++ Java	60.09%	Easy
0421	Maximum XOR of Two Numbers in an Array	C++	51.76%	Medium	Bit Manipulation | Trie
0435	Non-overlapping Intervals	C++ Java	41.89%	Medium	Greedy
0452	Minimum Number of Arrows to Burst Balloons	C++ Java	47.24%	Medium	Greedy
0454	4Sum II	C++ Java	51.44%	Medium	Hash Table | Binary Search
0455	Assign Cookies	C++ Java	48.78%	Easy	Greedy
0461	Hamming Distance	C++	70.63%	Easy	Bit Manipulation
0473	Matchsticks to Square	C++	36.48%	Medium	Depth-first Search
0476	Number Complement	C++	62.70%	Easy	Bit Manipulation
0477	Total Hamming Distance	C++	49.55%	Medium	Bit Manipulation
0542	01 Matrix	C++	36.76%	Medium	Depth-first Search | Breadth-first Search
0643	Maximum Average Subarray I	C++	40.14%	Easy	Array
0679	24 Game	Java	43.75%	Hard	Depth-first Search
0690	Employee Importance	C++	54.84%	Easy	Hash Table | Depth-first Search | Breadth-first Search
0733	Flood Fill	C++	51.69%	Easy	Depth-first Search
0746	Min Cost Climbing Stairs	C++ Java	48.10%	Easy	Array | Dynamic Programming
0771	Jewels and Stones	Kotlin	83.61%	Easy	Hash Table
0828	Unique Letter String	Java	41.27%	Hard	Two Pointers
0832	Flipping an Image	Java	73.29%	Easy	Array
0833	Find And Replace in String	Java	47.58%	Medium	String
0834	Sum of Distances in Tree	Java	40.75%	Hard	Tree | Depth-first Search
0836	Rectangle Overlap	Java	47.27%	Easy	Math
0840	Magic Squares In Grid	C++ Java	36.15%	Easy	Array
0841	Keys and Rooms	C++ Java	61.19%	Medium	Depth-first Search | Graph
0848	Shifting Letters	C++ Java	41.92%	Medium	String
0849	Maximize Distance to Closest Person	C++ Java	41.49%	Easy	Array
0851	Loud and Rich	C++ Java	48.91%	Medium	Depth-first Search
0852	Peak Index in a Mountain Array	Java	70.07%	Easy	Binary Search
0853	Car Fleet	C++	40.70%	Medium	Sort
0860	Lemonade Change	C++ Java	50.78%	Easy	Greedy
0861	Score After Flipping Matrix	C++ Java	70.45%	Medium	Greedy
0898	Bitwise ORs of Subarrays	C++	35.31%	Medium	Dynamic Programming | Bit Manipulation
0905	Sort Array By Parity	C++	72.78%	Easy	Array
0945	Minimum Increment to Make Array Unique	C++ Java	43.64%	Medium	Array
0946	Validate Stack Sequences	C++ Java	58.12%	Medium	Stack
0948	Bag of Tokens	C++ Java	39.64%	Medium	Greedy
0953	Verifying an Alien Dictionary	C++	55.92%	Easy	Hash Table
0954	Array of Doubled Pairs	C++	35.15%	Medium	Array | Hash Table
0955	Delete Columns to Make Sorted II	C++	32.13%	Medium	Greedy
0961	N-Repeated Element in Size 2N Array	Kotlin	72.43%	Easy	Hash Table
1002	Find Common Characters	C++ Java	65.67%	Easy	Array | Hash Table
1089	Duplicate Zeros	C++	58.91%	Easy	Array
1090	Largest Values From Labels	C++	57.45%	Medium	Hash Table | Greedy
1091	Shortest Path in Binary Matrix	C++	36.23%	Medium	Breadth-first Search
1092	Shortest Common Supersequence	C++	48.32%	Hard	Dynamic Programming
1160	Find Words That Can Be Formed by Characters	Kotlin	68.63%	Easy	Array | Hash Table