| Spiral Matrix | Medium | 56.1% | 100.0% | ArrayMatrixSimulation |
| Two Sum | Easy | 57.1% | 87.5% | ArrayHash Table |
| Longest Substring Without Repeating Characters | Medium | 38.5% | 87.5% | Hash TableStringSliding Window |
| Longest Palindromic Substring | Medium | 37.3% | 87.5% | Two PointersStringDynamic Programming |
| Valid Parentheses | Easy | 43.7% | 87.5% | StringStack |
| Generate Parentheses | Medium | 78.2% | 87.5% | StringDynamic ProgrammingBacktracking |
| Merge Intervals | Medium | 51.1% | 87.5% | ArraySorting |
| Climbing Stairs | Easy | 53.9% | 87.5% | MathDynamic ProgrammingMemoization |
| Best Time to Buy and Sell Stock | Easy | 56.4% | 87.5% | ArrayDynamic Programming |
| Compare Version Numbers | Medium | 46.1% | 87.5% | Two PointersString |
| Number of Islands | Medium | 63.8% | 87.5% | ArrayDepth-First SearchBreadth-First Search+2 |
| Decode String | Medium | 62.2% | 87.5% | StringStackRecursion |
| Zigzag Conversion | Medium | 53.5% | 75.0% | String |
| Container With Most Water | Medium | 59.5% | 75.0% | ArrayTwo PointersGreedy |
| Longest Common Prefix | Easy | 47.1% | 75.0% | ArrayStringTrie |
| Regular Expression Matching | Hard | 30.4% | 75.0% | StringDynamic ProgrammingRecursion |
| Valid Sudoku | Medium | 64.1% | 75.0% | ArrayHash TableMatrix |
| Trapping Rain Water | Hard | 66.8% | 75.0% | ArrayTwo PointersDynamic Programming+2 |
| Wildcard Matching | Hard | 31.3% | 75.0% | StringDynamic ProgrammingGreedy+1 |
| Rotate Image | Medium | 79.3% | 75.0% | ArrayMathMatrix |
| Group Anagrams | Medium | 72.2% | 75.0% | ArrayHash TableString+1 |
| Sort Even and Odd Indices Independently | Easy | 63.2% | 75.0% | ArraySorting |
| Find Winner on a Tic Tac Toe Game | Easy | 54.5% | 75.0% | ArrayHash TableMatrix+1 |
| Remove All Occurrences of a Substring | Medium | 78.4% | 75.0% | StringStackSimulation |
| Largest Number | Medium | 42.6% | 75.0% | ArrayStringGreedy+1 |
| Sqrt(x) | Easy | 41.4% | 75.0% | MathBinary Search |
| Daily Temperatures | Medium | 68.3% | 75.0% | ArrayStackMonotonic Stack |
| Count Monobit Integers | Easy | 66.0% | 75.0% | Bit ManipulationEnumeration |
| Roman to Integer | Easy | 66.2% | 62.5% | Hash TableMathString |
| Find the Index of the First Occurrence in a String | Easy | 46.2% | 62.5% | Two PointersStringString Matching |
| Search in Rotated Sorted Array | Medium | 44.1% | 62.5% | ArrayBinary Search |
| Count and Say | Medium | 62.3% | 62.5% | String |
| Edit Distance | Medium | 60.1% | 62.5% | StringDynamic Programming |
| Merge Sorted Array | Easy | 54.4% | 62.5% | ArrayTwo PointersSorting |
| Restore IP Addresses | Medium | 55.3% | 62.5% | StringBacktracking |
| Excel Sheet Column Number | Easy | 67.2% | 62.5% | MathString |
| Product of Array Except Self | Medium | 68.6% | 62.5% | ArrayPrefix Sum |
| Move Zeroes | Easy | 63.5% | 62.5% | ArrayTwo Pointers |
| Non-overlapping Intervals | Medium | 56.7% | 62.5% | ArrayDynamic ProgrammingGreedy+1 |
| Basic Calculator II | Medium | 46.6% | 62.5% | MathStringStack |
| Longest Valid Parentheses | Hard | 38.0% | 62.5% | StringDynamic ProgrammingStack |
| Pascal's Triangle | Easy | 78.7% | 62.5% | ArrayDynamic Programming |
| Rotting Oranges | Medium | 58.1% | 62.5% | ArrayBreadth-First SearchMatrix |
| Jump Game II | Medium | 42.5% | 62.5% | ArrayDynamic ProgrammingGreedy |
| Palindrome Number | Easy | 60.2% | 50.0% | Math |
| Integer to Roman | Medium | 70.4% | 50.0% | Hash TableMathString |
| 3Sum Closest | Medium | 48.0% | 50.0% | ArrayTwo PointersSorting |
| Letter Combinations of a Phone Number | Medium | 65.5% | 50.0% | Hash TableStringBacktracking |
| 3Sum | Medium | 38.6% | 50.0% | ArrayTwo PointersSorting |
| Median of Two Sorted Arrays | Hard | 45.9% | 50.0% | ArrayBinary SearchDivide and Conquer |
| Combination Sum | Medium | 76.1% | 50.0% | ArrayBacktracking |
| N-Queens | Hard | 74.9% | 50.0% | ArrayBacktracking |
| Maximum Subarray | Medium | 53.0% | 50.0% | ArrayDivide and ConquerDynamic Programming |
| Jump Game | Medium | 40.5% | 50.0% | ArrayDynamic ProgrammingGreedy |
| Add to Array-Form of Integer | Easy | 45.4% | 50.0% | ArrayMath |
| Sort Colors | Medium | 69.1% | 50.0% | ArrayTwo PointersSorting |
| Word Search | Medium | 46.8% | 50.0% | ArrayStringBacktracking+2 |
| Decode Ways | Medium | 37.6% | 50.0% | StringDynamic Programming |
| Best Time to Buy and Sell Stock II | Medium | 70.7% | 50.0% | ArrayDynamic ProgrammingGreedy |
| Rotate Array | Medium | 44.4% | 50.0% | ArrayMathTwo Pointers |
| Isomorphic Strings | Easy | 48.0% | 50.0% | Hash TableString |
| Replace Elements with Greatest Element on Right Side | Easy | 72.0% | 50.0% | Array |
| Find the Duplicate Number | Medium | 64.0% | 50.0% | ArrayTwo PointersBinary Search+1 |
| Partition Equal Subset Sum | Medium | 49.2% | 50.0% | ArrayDynamic Programming |
| Diagonal Traverse | Medium | 67.0% | 50.0% | ArrayMatrixSimulation |
| Asteroid Collision | Medium | 47.1% | 50.0% | ArrayStackSimulation |
| Largest Rectangle in Histogram | Hard | 49.3% | 50.0% | ArrayStackMonotonic Stack |
| Word Search II | Hard | 38.1% | 50.0% | ArrayStringBacktracking+2 |
| Maximal Rectangle | Hard | 58.1% | 50.0% | ArrayDynamic ProgrammingStack+2 |
| String Compression | Medium | 59.5% | 50.0% | Two PointersString |
| Majority Element | Easy | 66.1% | 50.0% | ArrayHash TableDivide and Conquer+2 |
| Valid Palindrome | Easy | 52.8% | 50.0% | Two PointersString |
| Multiply Strings | Medium | 43.5% | 50.0% | MathStringSimulation |
| Set Matrix Zeroes | Medium | 62.4% | 50.0% | ArrayHash TableMatrix |
| Subarray Sum Equals K | Medium | 46.8% | 50.0% | ArrayHash TablePrefix Sum |
| Merge Two Sorted Lists | Easy | 67.9% | 50.0% | Linked ListRecursion |
| Dungeon Game | Hard | 40.8% | 50.0% | ArrayDynamic ProgrammingMatrix |
| Minimum Path Sum | Medium | 67.8% | 50.0% | ArrayDynamic ProgrammingMatrix |
| Island Perimeter | Easy | 74.2% | 50.0% | ArrayDepth-First SearchBreadth-First Search+1 |
| Top K Frequent Elements | Medium | 65.8% | 50.0% | ArrayHash TableDivide and Conquer+5 |
| Gas Station | Medium | 47.5% | 50.0% | ArrayGreedy |
| Remove Duplicates from Sorted Array | Easy | 62.2% | 37.5% | ArrayTwo Pointers |
| Search Insert Position | Easy | 50.7% | 37.5% | ArrayBinary Search |
| Permutations | Medium | 81.6% | 37.5% | ArrayBacktracking |
| Spiral Matrix II | Medium | 74.6% | 37.5% | ArrayMatrixSimulation |
| Text Justification | Hard | 50.4% | 37.5% | ArrayStringSimulation |
| Subsets | Medium | 82.0% | 37.5% | ArrayBacktrackingBit Manipulation |
| Longest Consecutive Sequence | Medium | 47.0% | 37.5% | ArrayHash TableUnion-Find |
| Word Break | Medium | 49.1% | 37.5% | ArrayHash TableString+3 |
| Reverse Words in a String | Medium | 55.5% | 37.5% | Two PointersString |
| House Robber | Medium | 52.9% | 37.5% | ArrayDynamic Programming |
| Happy Number | Easy | 59.2% | 37.5% | Hash TableMathTwo Pointers |
| Palindrome Linked List | Easy | 57.4% | 37.5% | Linked ListTwo PointersStack+1 |
| Integer to English Words | Hard | 34.8% | 37.5% | MathStringRecursion |
| Find Triangular Sum of an Array | Medium | 82.0% | 37.5% | ArrayMathSimulation+2 |
| Word Pattern | Easy | 43.8% | 37.5% | Hash TableString |
| Longest Increasing Subsequence | Medium | 59.0% | 37.5% | ArrayBinary SearchDynamic Programming |
| Coin Change | Medium | 47.9% | 37.5% | ArrayDynamic ProgrammingBreadth-First Search |
| Reverse Vowels of a String | Easy | 60.6% | 37.5% | Two PointersString |
| Cinema Seat Allocation | Medium | 43.6% | 37.5% | ArrayHash TableGreedy+1 |
| Shuffle the Array | Easy | 89.0% | 37.5% | Array |
| Merge Strings Alternately | Easy | 82.1% | 37.5% | Two PointersString |
| Find the Winner of the Circular Game | Medium | 82.2% | 37.5% | ArrayMathRecursion+2 |
| Reverse Only Letters | Easy | 68.1% | 37.5% | Two PointersString |
| Maximum Population Year | Easy | 63.6% | 37.5% | ArrayCountingPrefix Sum |
| Remove All Adjacent Duplicates In String | Easy | 72.8% | 37.5% | StringStack |
| Minimum Time Difference | Medium | 62.5% | 37.5% | ArrayMathString+1 |
| Consecutive Numbers Sum | Hard | 42.6% | 37.5% | MathEnumeration |
| Sudoku Solver | Hard | 65.4% | 37.5% | ArrayHash TableBacktracking+1 |
| Largest Substring Between Two Equal Characters | Easy | 68.3% | 37.5% | Hash TableString |
| String to Integer (atoi) | Medium | 20.6% | 37.5% | String |
| Contains Duplicate | Easy | 64.1% | 37.5% | ArrayHash TableSorting |
| Coin Change II | Medium | 60.5% | 37.5% | ArrayDynamic Programming |
| Zuma Game | Hard | 30.2% | 37.5% | StringDynamic ProgrammingStack+2 |
| Fraction to Recurring Decimal | Medium | 30.5% | 37.5% | Hash TableMathString |
| Summary Ranges | Easy | 53.9% | 37.5% | Array |
| Sort Characters By Frequency | Medium | 75.1% | 37.5% | Hash TableStringSorting+3 |
| Find Minimum in Rotated Sorted Array | Medium | 53.8% | 37.5% | ArrayBinary Search |
| Largest Time for Given Digits | Medium | 35.8% | 37.5% | ArrayStringBacktracking+1 |
| Find Peak Element | Medium | 46.8% | 37.5% | ArrayBinary Search |
| Word Subsets | Medium | 55.9% | 37.5% | ArrayHash TableString |
| Interleaving String | Medium | 43.5% | 37.5% | StringDynamic Programming |
| Fair Distribution of Cookies | Medium | 69.8% | 37.5% | ArrayDynamic ProgrammingBacktracking+2 |
| Check if Every Row and Column Contains All Numbers | Easy | 53.9% | 37.5% | ArrayHash TableMatrix |
| Number of Good Pairs | Easy | 89.8% | 37.5% | ArrayHash TableMath+1 |
| Add Two Numbers | Medium | 47.9% | 37.5% | Linked ListMathRecursion |
| Buddy Strings | Easy | 33.9% | 37.5% | Hash TableString |
| Intersection of Two Arrays | Easy | 77.5% | 37.5% | ArrayHash TableTwo Pointers+2 |
| Maximum Number of Events That Can Be Attended | Medium | 38.9% | 37.5% | ArrayGreedySorting+1 |
| Minimum Window Substring | Hard | 46.9% | 37.5% | Hash TableStringSliding Window |
| Odd Even Linked List | Medium | 62.3% | 37.5% | Linked List |
| Sum of Beauty of All Substrings | Medium | 73.5% | 37.5% | Hash TableStringCounting |
| Kth Largest Element in an Array | Medium | 68.8% | 37.5% | ArrayDivide and ConquerSorting+2 |
| Minimum Number of Swaps to Make the String Balanced | Medium | 78.1% | 37.5% | Two PointersStringStack+1 |
| Rotate String | Easy | 65.1% | 37.5% | StringString Matching |
| Sort Array by Increasing Frequency | Easy | 80.7% | 37.5% | ArrayHash TableSorting |
| Remove Duplicate Letters | Medium | 52.8% | 37.5% | StringStackGreedy+1 |
| 01 Matrix | Medium | 53.3% | 37.5% | ArrayDynamic ProgrammingBreadth-First Search+1 |
| Reorganize String | Medium | 56.8% | 37.5% | Hash TableStringGreedy+3 |
| 4Sum | Medium | 40.0% | 37.5% | ArrayTwo PointersSorting |
| Defanging an IP Address | Easy | 90.0% | 37.5% | String |
| Target Sum | Medium | 51.8% | 37.5% | ArrayDynamic ProgrammingBacktracking |
| Minimum Number of Arrows to Burst Balloons | Medium | 61.2% | 37.5% | ArrayGreedySorting |
| Longest Palindromic Subsequence | Medium | 65.1% | 37.5% | StringDynamic Programming |
| Single Element in a Sorted Array | Medium | 59.2% | 37.5% | ArrayBinary Search |
| Count Pairs Whose Sum is Less than Target | Easy | 87.7% | 37.5% | ArrayTwo PointersBinary Search+1 |
| Find the Highest Altitude | Easy | 83.9% | 37.5% | ArrayPrefix Sum |
| Long Pressed Name | Easy | 32.8% | 37.5% | Two PointersString |
| Strong Password Checker | Hard | 15.4% | 37.5% | StringGreedyHeap (Priority Queue) |
| Max Points on a Line | Hard | 30.2% | 37.5% | ArrayHash TableMath+1 |
| Two Sum II - Input Array Is Sorted | Medium | 64.6% | 37.5% | ArrayTwo PointersBinary Search |
| Fruit Into Baskets | Medium | 50.5% | 37.5% | ArrayHash TableSliding Window |
| Next Greater Element II | Medium | 67.9% | 37.5% | ArrayStackMonotonic Stack |
| Perfect Squares | Medium | 56.3% | 37.5% | MathDynamic ProgrammingBreadth-First Search |
| House Robber II | Medium | 44.6% | 37.5% | ArrayDynamic Programming |
| Max Area of Island | Medium | 73.8% | 37.5% | ArrayDepth-First SearchBreadth-First Search+2 |
| Contains Duplicate II | Easy | 50.8% | 37.5% | ArrayHash TableSliding Window |
| Find Lucky Integer in an Array | Easy | 75.5% | 37.5% | ArrayHash TableCounting |
| Goal Parser Interpretation | Easy | 88.0% | 37.5% | String |
| Combination Sum II | Medium | 59.0% | 37.5% | ArrayBacktracking |
| First Unique Character in a String | Easy | 65.0% | 37.5% | Hash TableStringQueue+1 |
| Add Digits | Easy | 68.6% | 37.5% | MathSimulationNumber Theory |
| N-Repeated Element in Size 2N Array | Easy | 79.8% | 37.5% | ArrayHash Table |
| Is Subsequence | Easy | 48.8% | 37.5% | Two PointersStringDynamic Programming |
| Sliding Window Maximum | Hard | 48.4% | 37.5% | ArrayQueueSliding Window+2 |
| Assign Cookies | Easy | 54.7% | 37.5% | ArrayTwo PointersGreedy+1 |
| Find Missing and Repeated Values | Easy | 83.3% | 37.5% | ArrayHash TableMath+1 |
| Reverse Words in a String III | Easy | 83.9% | 37.5% | Two PointersString |
| Distinct Subsequences | Hard | 51.5% | 37.5% | StringDynamic Programming |
| Unique Paths | Medium | 66.5% | 37.5% | MathDynamic ProgrammingCombinatorics |
| Excel Sheet Column Title | Easy | 45.7% | 37.5% | MathString |
| LRU Cache | Medium | 46.8% | 37.5% | Hash TableLinked ListDesign+1 |
| Largest Number At Least Twice of Others | Easy | 52.1% | 37.5% | ArraySorting |
| Plus One | Easy | 49.5% | 37.5% | ArrayMath |
| Divide Two Integers | Medium | 19.4% | 37.5% | MathBit Manipulation |
| Missing Number | Easy | 71.6% | 37.5% | ArrayHash TableMath+3 |
| Next Greater Element III | Medium | 35.1% | 37.5% | MathTwo PointersString |
| Valid Anagram | Easy | 67.8% | 37.5% | Hash TableStringSorting |
| Find First and Last Position of Element in Sorted Array | Medium | 48.3% | 37.5% | ArrayBinary Search |