| Spiral Matrix | Medium | 56.2% | 100.0% | ArrayMatrixSimulation |
| Decode String | Medium | 62.3% | 95.1% | StringStackRecursion |
| Longest Substring Without Repeating Characters | Medium | 38.5% | 90.1% | Hash TableStringSliding Window |
| Best Time to Buy and Sell Stock | Easy | 56.4% | 89.0% | ArrayDynamic Programming |
| Valid Parentheses | Easy | 43.7% | 87.8% | StringStack |
| Merge Intervals | Medium | 51.2% | 86.5% | ArraySorting |
| Longest Palindromic Substring | Medium | 37.4% | 85.2% | Two PointersStringDynamic Programming |
| Two Sum | Easy | 57.1% | 83.8% | ArrayHash Table |
| Climbing Stairs | Easy | 53.9% | 82.3% | MathDynamic ProgrammingMemoization |
| Group Anagrams | Medium | 72.2% | 82.3% | ArrayHash TableString+1 |
| Trapping Rain Water | Hard | 66.8% | 82.3% | ArrayTwo PointersDynamic Programming+2 |
| Compare Version Numbers | Medium | 46.1% | 78.9% | Two PointersString |
| Sort Even and Odd Indices Independently | Easy | 63.2% | 78.9% | ArraySorting |
| Daily Temperatures | Medium | 68.4% | 77.0% | ArrayStackMonotonic Stack |
| Number of Islands | Medium | 63.8% | 77.0% | ArrayDepth-First SearchBreadth-First Search+2 |
| Largest Number | Medium | 42.6% | 77.0% | ArrayStringGreedy+1 |
| Generate Parentheses | Medium | 78.3% | 77.0% | StringDynamic ProgrammingBacktracking |
| Find Winner on a Tic Tac Toe Game | Easy | 54.5% | 77.0% | ArrayHash TableMatrix+1 |
| Rotate Image | Medium | 79.4% | 75.0% | ArrayMathMatrix |
| Zigzag Conversion | Medium | 53.6% | 75.0% | String |
| Wildcard Matching | Hard | 31.4% | 75.0% | StringDynamic ProgrammingGreedy+1 |
| Sqrt(x) | Easy | 41.4% | 72.8% | MathBinary Search |
| Remove All Occurrences of a Substring | Medium | 78.4% | 72.8% | StringStackSimulation |
| Container With Most Water | Medium | 59.6% | 70.3% | ArrayTwo PointersGreedy |
| Regular Expression Matching | Hard | 30.5% | 70.3% | StringDynamic ProgrammingRecursion |
| Count Monobit Integers | Easy | 66.1% | 70.3% | Bit ManipulationEnumeration |
| Longest Common Prefix | Easy | 47.1% | 67.6% | ArrayStringTrie |
| Longest Valid Parentheses | Hard | 38.1% | 67.6% | StringDynamic ProgrammingStack |
| Merge Close Characters | Medium | | 67.6% | Hash TableString |
| Angle Between Hands of a Clock | Medium | 64.4% | 64.5% | Math |
| Roman to Integer | Easy | 66.3% | 64.5% | Hash TableMathString |
| Basic Calculator II | Medium | 46.7% | 64.5% | MathStringStack |
| Rotting Oranges | Medium | 58.2% | 64.5% | ArrayBreadth-First SearchMatrix |
| Search in Rotated Sorted Array | Medium | 44.1% | 64.5% | ArrayBinary Search |
| Move Zeroes | Easy | 63.6% | 64.5% | ArrayTwo Pointers |
| Letter Combinations of a Phone Number | Medium | 65.5% | 60.9% | Hash TableStringBacktracking |
| Edit Distance | Medium | 60.2% | 60.9% | StringDynamic Programming |
| Merge Sorted Array | Easy | 54.4% | 60.9% | ArrayTwo PointersSorting |
| Non-overlapping Intervals | Medium | 56.7% | 60.9% | ArrayDynamic ProgrammingGreedy+1 |
| Valid Sudoku | Medium | 64.2% | 60.9% | ArrayHash TableMatrix |
| Jump Game II | Medium | 42.5% | 60.9% | ArrayDynamic ProgrammingGreedy |
| Jump Game | Medium | 40.5% | 56.6% | ArrayDynamic ProgrammingGreedy |
| Excel Sheet Column Number | Easy | 67.3% | 56.6% | MathString |
| Replace Elements with Greatest Element on Right Side | Easy | 72.0% | 56.6% | Array |
| Product of Array Except Self | Medium | 68.6% | 56.6% | ArrayPrefix Sum |
| Island Perimeter | Easy | 74.3% | 56.6% | ArrayDepth-First SearchBreadth-First Search+1 |
| Single Element in a Sorted Array | Medium | 59.2% | 56.6% | ArrayBinary Search |
| 3Sum | Medium | 38.6% | 56.6% | ArrayTwo PointersSorting |
| Maximum Subarray | Medium | 53.0% | 56.6% | ArrayDivide and ConquerDynamic Programming |
| Add Two Numbers | Medium | 48.0% | 56.6% | Linked ListMathRecursion |
| Subarray Sum Equals K | Medium | 46.8% | 56.6% | ArrayHash TablePrefix Sum |
| Rotate Array | Medium | 44.5% | 51.4% | ArrayMathTwo Pointers |
| Find the Index of the First Occurrence in a String | Easy | 46.3% | 51.4% | Two PointersStringString Matching |
| Pascal's Triangle | Easy | 78.7% | 51.4% | ArrayDynamic Programming |
| 3Sum Closest | Medium | 48.1% | 51.4% | ArrayTwo PointersSorting |
| Isomorphic Strings | Easy | 48.1% | 51.4% | Hash TableString |
| Multiply Strings | Medium | 43.6% | 51.4% | MathStringSimulation |
| Merge Two Sorted Lists | Easy | 68.0% | 51.4% | Linked ListRecursion |
| Dungeon Game | Hard | 40.9% | 51.4% | ArrayDynamic ProgrammingMatrix |
| N-Queens | Hard | 75.0% | 51.4% | ArrayBacktracking |
| Gas Station | Medium | 47.5% | 51.4% | ArrayGreedy |
| Median of Two Sorted Arrays | Hard | 46.0% | 51.4% | ArrayBinary SearchDivide and Conquer |
| Palindrome Number | Easy | 60.3% | 51.4% | Math |
| Asteroid Collision | Medium | 47.2% | 51.4% | ArrayStackSimulation |
| Count and Say | Medium | 62.3% | 51.4% | String |
| Decode Ways | Medium | 37.6% | 51.4% | StringDynamic Programming |
| Word Search II | Hard | 38.1% | 51.4% | ArrayStringBacktracking+2 |
| Kth Largest Element in an Array | Medium | 68.8% | 51.4% | ArrayDivide and ConquerSorting+2 |
| Top K Frequent Elements | Medium | 65.9% | 51.4% | ArrayHash TableDivide and Conquer+5 |
| Excel Sheet Column Title | Easy | 45.8% | 51.4% | MathString |
| Partitioning Into Minimum Number Of Deci-Binary Numbers | Medium | 88.8% | 44.8% | StringGreedy |
| Remove Duplicates from Sorted Array | Easy | 62.3% | 44.8% | ArrayTwo Pointers |
| Word Search | Medium | 46.9% | 44.8% | ArrayStringBacktracking+2 |
| Partition Equal Subset Sum | Medium | 49.2% | 44.8% | ArrayDynamic Programming |
| Set Matrix Zeroes | Medium | 62.5% | 44.8% | ArrayHash TableMatrix |
| Sudoku Solver | Hard | 65.4% | 44.8% | ArrayHash TableBacktracking+1 |
| Contains Duplicate | Easy | 64.1% | 44.8% | ArrayHash TableSorting |
| Reverse Words in a String | Medium | 55.6% | 44.8% | Two PointersString |
| Maximal Rectangle | Hard | 58.1% | 44.8% | ArrayDynamic ProgrammingStack+2 |
| Majority Element | Easy | 66.1% | 44.8% | ArrayHash TableDivide and Conquer+2 |
| Fraction to Recurring Decimal | Medium | 30.6% | 44.8% | Hash TableMathString |
| Sort Characters By Frequency | Medium | 75.1% | 44.8% | Hash TableStringSorting+3 |
| Valid Palindrome | Easy | 52.8% | 44.8% | Two PointersString |
| Minimum Path Sum | Medium | 67.8% | 44.8% | ArrayDynamic ProgrammingMatrix |
| Buddy Strings | Easy | 33.9% | 44.8% | Hash TableString |
| Sort Array by Increasing Frequency | Easy | 80.7% | 44.8% | ArrayHash TableSorting |
| Remove Duplicate Letters | Medium | 52.8% | 44.8% | StringStackGreedy+1 |
| Minimum Number of Arrows to Burst Balloons | Medium | 61.2% | 44.8% | ArrayGreedySorting |
| Find the Highest Altitude | Easy | 83.9% | 44.8% | ArrayPrefix Sum |
| Fruit Into Baskets | Medium | 50.5% | 44.8% | ArrayHash TableSliding Window |
| Max Area of Island | Medium | 73.8% | 44.8% | ArrayDepth-First SearchBreadth-First Search+2 |
| Combination Sum | Medium | 76.1% | 44.8% | ArrayBacktracking |
| Diagonal Traverse | Medium | 67.0% | 44.8% | ArrayMatrixSimulation |
| Largest Time for Given Digits | Medium | 35.8% | 44.8% | ArrayStringBacktracking+1 |
| Lemonade Change | Easy | 58.9% | 44.8% | ArrayGreedy |
| Integer to English Words | Hard | 34.8% | 44.8% | MathStringRecursion |
| Distinct Subsequences | Hard | 51.5% | 35.6% | StringDynamic Programming |
| Spiral Matrix II | Medium | 74.7% | 35.6% | ArrayMatrixSimulation |
| Subsets | Medium | 82.1% | 35.6% | ArrayBacktrackingBit Manipulation |
| Best Time to Buy and Sell Stock II | Medium | 70.8% | 35.6% | ArrayDynamic ProgrammingGreedy |
| Word Break | Medium | 49.1% | 35.6% | ArrayHash TableString+3 |
| Happy Number | Easy | 59.3% | 35.6% | Hash TableMathTwo Pointers |
| Find the Duplicate Number | Medium | 64.0% | 35.6% | ArrayTwo PointersBinary Search+1 |
| Word Pattern | Easy | 43.8% | 35.6% | Hash TableString |
| Reverse Vowels of a String | Easy | 60.7% | 35.6% | Two PointersString |
| Merge Strings Alternately | Easy | 82.1% | 35.6% | Two PointersString |
| Longest Consecutive Sequence | Medium | 47.0% | 35.6% | ArrayHash TableUnion-Find |
| Restore IP Addresses | Medium | 55.3% | 35.6% | StringBacktracking |
| String Compression | Medium | 59.6% | 35.6% | Two PointersString |
| Largest Rectangle in Histogram | Hard | 49.4% | 35.6% | ArrayStackMonotonic Stack |
| House Robber | Medium | 52.9% | 35.6% | ArrayDynamic Programming |
| Find Peak Element | Medium | 46.8% | 35.6% | ArrayBinary Search |
| Minimum Time Difference | Medium | 62.6% | 35.6% | ArrayMathString+1 |
| Coin Change II | Medium | 60.4% | 35.6% | ArrayDynamic Programming |
| Zuma Game | Hard | 30.2% | 35.6% | StringDynamic ProgrammingStack+2 |
| Consecutive Numbers Sum | Hard | 42.6% | 35.6% | MathEnumeration |
| String to Integer (atoi) | Medium | 20.6% | 35.6% | String |
| Coin Change | Medium | 48.0% | 35.6% | ArrayDynamic ProgrammingBreadth-First Search |
| 01 Matrix | Medium | 53.4% | 35.6% | ArrayDynamic ProgrammingBreadth-First Search+1 |
| Target Sum | Medium | 51.9% | 35.6% | ArrayDynamic ProgrammingBacktracking |
| Interleaving String | Medium | 43.5% | 35.6% | StringDynamic Programming |
| Word Subsets | Medium | 55.9% | 35.6% | ArrayHash TableString |
| Number of Good Pairs | Easy | 89.8% | 35.6% | ArrayHash TableMath+1 |
| Max Points on a Line | Hard | 30.3% | 35.6% | ArrayHash TableMath+1 |
| Fair Distribution of Cookies | Medium | 69.8% | 35.6% | ArrayDynamic ProgrammingBacktracking+2 |
| Check if Every Row and Column Contains All Numbers | Easy | 53.9% | 35.6% | ArrayHash TableMatrix |
| Two Sum II - Input Array Is Sorted | Medium | 64.6% | 35.6% | ArrayTwo PointersBinary Search |
| Maximum Number of Events That Can Be Attended | Medium | 38.9% | 35.6% | ArrayGreedySorting+1 |
| Defanging an IP Address | Easy | 90.0% | 35.6% | String |
| Odd Even Linked List | Medium | 62.3% | 35.6% | Linked List |
| Sum of Beauty of All Substrings | Medium | 73.6% | 35.6% | Hash TableStringCounting |
| Perfect Squares | Medium | 56.3% | 35.6% | MathDynamic ProgrammingBreadth-First Search |
| Minimum Number of Swaps to Make the String Balanced | Medium | 78.1% | 35.6% | Two PointersStringStack+1 |
| Long Pressed Name | Easy | 32.8% | 35.6% | Two PointersString |
| Rotate String | Easy | 65.1% | 35.6% | StringString Matching |
| Reorganize String | Medium | 56.8% | 35.6% | Hash TableStringGreedy+3 |
| 4Sum | Medium | 40.0% | 35.6% | ArrayTwo PointersSorting |
| First Unique Character in a String | Easy | 65.1% | 35.6% | Hash TableStringQueue+1 |
| Longest Palindromic Subsequence | Medium | 65.1% | 35.6% | StringDynamic Programming |
| Find the Winner of the Circular Game | Medium | 82.2% | 35.6% | ArrayMathRecursion+2 |
| Minimum Window Substring | Hard | 47.0% | 35.6% | Hash TableStringSliding Window |
| Assign Cookies | Easy | 54.7% | 35.6% | ArrayTwo PointersGreedy+1 |
| Find Missing and Repeated Values | Easy | 83.3% | 35.6% | ArrayHash TableMath+1 |
| Unique Paths | Medium | 66.6% | 35.6% | MathDynamic ProgrammingCombinatorics |
| Strong Password Checker | Hard | 15.5% | 35.6% | StringGreedyHeap (Priority Queue) |
| LRU Cache | Medium | 46.8% | 35.6% | Hash TableLinked ListDesign+1 |
| Next Greater Element II | Medium | 67.9% | 35.6% | ArrayStackMonotonic Stack |
| Search Insert Position | Easy | 50.7% | 35.6% | ArrayBinary Search |
| Intersection of Two Arrays | Easy | 77.5% | 35.6% | ArrayHash TableTwo Pointers+2 |
| Contains Duplicate II | Easy | 50.8% | 35.6% | ArrayHash TableSliding Window |
| House Robber II | Medium | 44.6% | 35.6% | ArrayDynamic Programming |
| Missing Number | Easy | 71.7% | 35.6% | ArrayHash TableMath+3 |
| Find First and Last Position of Element in Sorted Array | Medium | 48.4% | 35.6% | ArrayBinary Search |
| Find Lucky Integer in an Array | Easy | 75.5% | 35.6% | ArrayHash TableCounting |
| Sliding Window Maximum | Hard | 48.5% | 35.6% | ArrayQueueSliding Window+2 |
| Integer to Roman | Medium | 70.5% | 35.6% | Hash TableMathString |
| Combination Sum II | Medium | 59.0% | 35.6% | ArrayBacktracking |
| N-Repeated Element in Size 2N Array | Easy | 79.8% | 35.6% | ArrayHash Table |
| Is Subsequence | Easy | 48.9% | 35.6% | Two PointersStringDynamic Programming |
| Reverse Words in a String III | Easy | 83.9% | 35.6% | Two PointersString |
| Largest Number At Least Twice of Others | Easy | 52.1% | 35.6% | ArraySorting |
| Plus One | Easy | 49.6% | 35.6% | ArrayMath |
| Valid Anagram | Easy | 67.8% | 35.6% | Hash TableStringSorting |
| Remove K Digits | Medium | 36.4% | 35.6% | StringStackGreedy+1 |
| Maximum Number of Words Found in Sentences | Easy | 86.7% | 35.6% | ArrayString |
| Course Schedule | Medium | 50.8% | 35.6% | Depth-First SearchBreadth-First SearchGraph Theory+1 |
| Day of the Week | Easy | 59.0% | 35.6% | Math |
| First Missing Positive | Hard | 42.5% | 35.6% | ArrayHash Table |