| Fizz Buzz | Easy | 75.2% | 100.0% | MathStringSimulation |
| Two Sum | Easy | 57.1% | 87.5% | ArrayHash Table |
| Longest Substring Without Repeating Characters | Medium | 38.5% | 87.5% | Hash TableStringSliding Window |
| Integer to Roman | Medium | 70.4% | 87.5% | Hash TableMathString |
| Roman to Integer | Easy | 66.2% | 87.5% | Hash TableMathString |
| Best Time to Buy and Sell Stock | Easy | 56.4% | 87.5% | ArrayDynamic Programming |
| Count Ways to Group Overlapping Ranges | Medium | 39.0% | 87.5% | ArraySorting |
| Minimum Operations to Make All Array Elements Equal | Medium | 37.9% | 87.5% | ArrayBinary SearchSorting+1 |
| Merge Intervals | Medium | 51.1% | 87.5% | ArraySorting |
| Longest Palindromic Substring | Medium | 37.3% | 75.0% | Two PointersStringDynamic Programming |
| Valid Parentheses | Easy | 43.7% | 75.0% | StringStack |
| Rotate Image | Medium | 79.3% | 75.0% | ArrayMathMatrix |
| Maximum Profitable Triplets With Increasing Prices I | Medium | 55.3% | 75.0% | |
| Maximum Profitable Triplets With Increasing Prices II | Hard | 45.7% | 75.0% | |
| Number of Divisible Triplet Sums | Medium | 67.6% | 75.0% | |
| Type of Triangle | Easy | 44.1% | 75.0% | ArrayMathSorting |
| Minimum Absolute Difference | Easy | 75.0% | 75.0% | ArraySorting |
| Minimum Levels to Gain More Points | Medium | 40.1% | 75.0% | ArrayPrefix Sum |
| Taking Maximum Energy From the Mystic Dungeon | Medium | 61.0% | 75.0% | ArrayPrefix Sum |
| Minimum Operations to Make Median of Array Equal to K | Medium | 47.7% | 75.0% | ArrayGreedySorting |
| Find Products of Elements of Big Array | Hard | 24.2% | 75.0% | ArrayBinary SearchBit Manipulation |
| Find The First Player to win K Games in a Row | Medium | 40.0% | 75.0% | ArraySimulation |
| Find Occurrences of an Element in an Array | Medium | 73.2% | 75.0% | ArrayHash Table |
| Activity Participants | Medium | 72.0% | 75.0% | |
| Average Value of Even Numbers That Are Divisible by Three | Easy | 62.8% | 75.0% | ArrayMath |
| Sort the Students by Their Kth Score | Medium | 86.0% | 75.0% | ArraySortingMatrix |
| Find the Array Concatenation Value | Easy | 71.8% | 75.0% | ArrayTwo PointersSimulation |
| Minimum Length of String After Operations | Medium | 75.0% | 75.0% | Hash TableStringCounting |
| Count the Number of Incremovable Subarrays II | Hard | 40.1% | 75.0% | ArrayTwo PointersBinary Search |
| Count Vowel Strings in Ranges | Medium | 67.8% | 75.0% | ArrayStringPrefix Sum |
| Minimum Moves to Equal Array Elements | Medium | 58.5% | 75.0% | ArrayMath |
| Minimum Operations to Make Columns Strictly Increasing | Easy | 72.6% | 75.0% | ArrayGreedyMatrix |
| Longest Mountain in Array | Medium | 41.8% | 75.0% | ArrayTwo PointersDynamic Programming+1 |
| Letter Combinations of a Phone Number | Medium | 65.5% | 62.5% | Hash TableStringBacktracking |
| Group Anagrams | Medium | 72.2% | 62.5% | ArrayHash TableString+1 |
| String Compression | Medium | 59.5% | 62.5% | Two PointersString |
| Exclusive Time of Functions | Medium | 66.1% | 62.5% | ArrayStack |
| Maximum Units on a Truck | Easy | 74.6% | 62.5% | ArrayGreedySorting |
| Count Binary Substrings | Easy | 70.2% | 62.5% | Two PointersString |
| Number of Operations to Make Network Connected | Medium | 66.1% | 62.5% | Depth-First SearchBreadth-First SearchUnion-Find+1 |
| Lexicographically Smallest String After Substring Operation | Medium | 34.5% | 62.5% | StringGreedy |
| Maximum Sum of Distinct Subarrays With Length K | Medium | 42.8% | 62.5% | ArrayHash TableSliding Window |
| Find Pivot Index | Easy | 62.1% | 62.5% | ArrayPrefix Sum |
| Minimum Window Substring | Hard | 46.9% | 62.5% | Hash TableStringSliding Window |
| Max Consecutive Ones III | Medium | 67.3% | 62.5% | ArrayBinary SearchSliding Window+1 |
| Water Bottles | Easy | 72.6% | 62.5% | MathSimulation |
| Reach a Number | Medium | 44.6% | 62.5% | MathBinary Search |
| Palindrome Number | Easy | 60.2% | 50.0% | Math |
| Longest Common Prefix | Easy | 47.1% | 50.0% | ArrayStringTrie |
| Maximum Subarray | Medium | 53.0% | 50.0% | ArrayDivide and ConquerDynamic Programming |
| Shortest and Lexicographically Smallest Beautiful String | Medium | 40.8% | 50.0% | StringSliding Window |
| Longest Consecutive Sequence | Medium | 47.0% | 50.0% | ArrayHash TableUnion-Find |
| Product of Array Except Self | Medium | 68.6% | 50.0% | ArrayPrefix Sum |
| Meeting Rooms II | Medium | 52.5% | 50.0% | |
| The Employee That Worked on the Longest Task | Easy | 51.4% | 50.0% | Array |
| Subarray Product Less Than K | Medium | 53.9% | 50.0% | ArrayBinary SearchSliding Window+1 |
| Single-Threaded CPU | Medium | 47.3% | 50.0% | ArraySortingHeap (Priority Queue) |
| Validate Binary Search Tree | Medium | 35.3% | 50.0% | TreeDepth-First SearchBinary Search Tree+1 |
| Subarray Sum Equals K | Medium | 46.8% | 50.0% | ArrayHash TablePrefix Sum |
| Climbing Stairs | Easy | 53.9% | 50.0% | MathDynamic ProgrammingMemoization |
| Backspace String Compare | Easy | 49.8% | 50.0% | Two PointersStringStack+1 |
| Spiral Matrix | Medium | 56.1% | 50.0% | ArrayMatrixSimulation |
| Number of Divisible Substrings | Medium | 74.1% | 50.0% | |
| Minimum Number of Flips to Make the Binary String Alternating | Medium | 41.1% | 50.0% | StringDynamic ProgrammingSliding Window |
| Count Pairs Of Similar Strings | Easy | 73.5% | 50.0% | ArrayHash TableString+2 |
| Minimum String Length After Removing Substrings | Easy | 77.1% | 50.0% | StringStackSimulation |
| Valid Anagram | Easy | 67.8% | 50.0% | Hash TableStringSorting |
| 3Sum | Medium | 38.6% | 50.0% | ArrayTwo PointersSorting |
| Report Spam Message | Medium | 48.5% | 50.0% | ArrayHash TableString |
| Largest Number After Digit Swaps by Parity | Easy | 65.0% | 50.0% | SortingHeap (Priority Queue) |
| Merge Strings Alternately | Easy | 82.1% | 50.0% | Two PointersString |
| Number of Islands | Medium | 63.8% | 50.0% | ArrayDepth-First SearchBreadth-First Search+2 |
| Height Checker | Easy | 81.5% | 50.0% | ArraySortingCounting Sort |
| Find the Smallest Divisor Given a Threshold | Medium | 65.4% | 50.0% | ArrayBinary Search |
| Sliding Window Maximum | Hard | 48.4% | 50.0% | ArrayQueueSliding Window+2 |
| Maximum Median Sum of Subsequences of Size 3 | Medium | 65.0% | 50.0% | ArrayMathGreedy+2 |
| Boats to Save People | Medium | 61.4% | 50.0% | ArrayTwo PointersGreedy+1 |
| Minimum Number of Increments on Subarrays to Form a Target Array | Hard | 78.1% | 50.0% | ArrayDynamic ProgrammingStack+2 |
| Sum of Absolute Differences in a Sorted Array | Medium | 68.2% | 50.0% | ArrayMathPrefix Sum |
| Median of Two Sorted Arrays | Hard | 45.9% | 37.5% | ArrayBinary SearchDivide and Conquer |
| Merge Sorted Array | Easy | 54.4% | 37.5% | ArrayTwo PointersSorting |
| LRU Cache | Medium | 46.8% | 37.5% | Hash TableLinked ListDesign+1 |
| Majority Element | Easy | 66.1% | 37.5% | ArrayHash TableDivide and Conquer+2 |
| Rotate Array | Medium | 44.4% | 37.5% | ArrayMathTwo Pointers |
| Find the Duplicate Number | Medium | 64.0% | 37.5% | ArrayTwo PointersBinary Search+1 |
| Get Equal Substrings Within Budget | Medium | 59.5% | 37.5% | StringBinary SearchSliding Window+1 |
| Find Longest Calls | Medium | 62.9% | 37.5% | |
| Count Number of Teams | Medium | 70.2% | 37.5% | ArrayDynamic ProgrammingBinary Indexed Tree+1 |
| Smallest Missing Non-negative Integer After Operations | Medium | 55.9% | 37.5% | ArrayHash TableMath+1 |
| Find the Index of the First Occurrence in a String | Easy | 46.2% | 37.5% | Two PointersStringString Matching |
| Subsets | Medium | 82.0% | 37.5% | ArrayBacktrackingBit Manipulation |
| Find Minimum in Rotated Sorted Array | Medium | 53.8% | 37.5% | ArrayBinary Search |
| Flipping an Image | Easy | 83.6% | 37.5% | ArrayTwo PointersBit Manipulation+2 |
| N-Queens | Hard | 74.9% | 37.5% | ArrayBacktracking |
| Flip String to Monotone Increasing | Medium | 61.8% | 37.5% | StringDynamic Programming |
| Rearrange Array to Maximize Prefix Score | Medium | 42.5% | 37.5% | ArrayGreedySorting+1 |
| Minimum Swaps to Group All 1's Together II | Medium | 65.6% | 37.5% | ArraySliding Window |
| Find All Possible Stable Binary Arrays II | Hard | 27.3% | 37.5% | Dynamic ProgrammingPrefix Sum |
| Odd String Difference | Easy | 61.8% | 37.5% | ArrayHash TableString |
| Removing Stars From a String | Medium | 78.9% | 37.5% | StringStackSimulation |
| Divide Intervals Into Minimum Number of Groups | Medium | 63.6% | 37.5% | ArrayTwo PointersGreedy+3 |
| Missing Number | Easy | 71.6% | 37.5% | ArrayHash TableMath+3 |
| Minimum Time to Type Word Using Special Typewriter | Easy | 78.4% | 37.5% | StringGreedy |
| Remove Colored Pieces if Both Neighbors are the Same Color | Medium | 63.0% | 37.5% | MathStringGreedy+1 |
| Minimum Number of Changes to Make Binary String Beautiful | Medium | 76.4% | 37.5% | String |
| 3Sum Smaller | Medium | 51.3% | 37.5% | |
| Remove All Occurrences of a Substring | Medium | 78.4% | 37.5% | StringStackSimulation |
| Course Schedule II | Medium | 55.0% | 37.5% | Depth-First SearchBreadth-First SearchGraph Theory+1 |
| Reorganize String | Medium | 56.8% | 37.5% | Hash TableStringGreedy+3 |
| Make Lexicographically Smallest Array by Swapping Elements | Medium | 60.2% | 37.5% | ArrayUnion-FindSorting |
| Check if Array Is Sorted and Rotated | Easy | 55.7% | 37.5% | Array |
| Kth Missing Positive Number | Easy | 63.2% | 37.5% | ArrayBinary Search |
| Reverse Integer | Medium | 31.5% | 37.5% | Math |
| Reverse Linked List | Easy | 80.2% | 37.5% | Linked ListRecursion |
| Sort Characters By Frequency | Medium | 75.1% | 37.5% | Hash TableStringSorting+3 |
| Minimum Value to Get Positive Step by Step Sum | Easy | 64.6% | 37.5% | ArrayPrefix Sum |
| Contains Duplicate | Easy | 64.1% | 37.5% | ArrayHash TableSorting |
| Gas Station | Medium | 47.5% | 37.5% | ArrayGreedy |
| Gray Code | Medium | 64.0% | 37.5% | MathBacktrackingBit Manipulation |
| Reverse Words in a String | Medium | 55.5% | 37.5% | Two PointersString |
| Plus One | Easy | 49.5% | 37.5% | ArrayMath |
| Add Binary | Easy | 57.6% | 37.5% | MathStringBit Manipulation+1 |
| Candy | Hard | 47.9% | 37.5% | ArrayGreedy |
| Online Stock Span | Medium | 68.7% | 37.5% | StackDesignMonotonic Stack+1 |
| Search in Rotated Sorted Array | Medium | 44.1% | 37.5% | ArrayBinary Search |
| Container With Most Water | Medium | 59.5% | 37.5% | ArrayTwo PointersGreedy |
| Move Zeroes | Easy | 63.5% | 37.5% | ArrayTwo Pointers |
| Linked List Cycle | Easy | 53.9% | 37.5% | Hash TableLinked ListTwo Pointers |
| Intersection of Two Arrays II | Easy | 59.7% | 37.5% | ArrayHash TableTwo Pointers+2 |
| Word Search | Medium | 46.8% | 37.5% | ArrayStringBacktracking+2 |
| Minimum Number of Swaps to Make the String Balanced | Medium | 78.1% | 37.5% | Two PointersStringStack+1 |
| Last Substring in Lexicographical Order | Hard | 35.0% | 37.5% | Two PointersString |
| Minimum Add to Make Parentheses Valid | Medium | 74.4% | 37.5% | StringStackGreedy |
| Search Insert Position | Easy | 50.7% | 37.5% | ArrayBinary Search |
| Jump Game II | Medium | 42.4% | 37.5% | ArrayDynamic ProgrammingGreedy |
| Minimum Cost to Connect Sticks | Medium | 71.8% | 37.5% | |
| Big Countries | Easy | 68.4% | 37.5% | Database |
| Heaters | Medium | 41.4% | 37.5% | ArrayTwo PointersBinary Search+1 |
| Grumpy Bookstore Owner | Medium | 64.0% | 37.5% | ArraySliding Window |
| Merge k Sorted Lists | Hard | 58.8% | 37.5% | Linked ListDivide and ConquerHeap (Priority Queue)+1 |
| Maximum Value at a Given Index in a Bounded Array | Medium | 38.9% | 37.5% | MathBinary SearchGreedy |
| Alert Using Same Key-Card Three or More Times in a One Hour Period | Medium | 46.1% | 37.5% | ArrayHash TableString+1 |
| Middle of the Linked List | Easy | 81.5% | 37.5% | Linked ListTwo Pointers |
| Remove Duplicates from Sorted Array | Easy | 62.2% | 37.5% | ArrayTwo Pointers |
| Min Stack | Medium | 57.7% | 37.5% | StackDesign |
| Next Permutation | Medium | 44.7% | 37.5% | ArrayTwo Pointers |
| Asteroid Collision | Medium | 47.1% | 37.5% | ArrayStackSimulation |
| Course Schedule | Medium | 50.8% | 37.5% | Depth-First SearchBreadth-First SearchGraph Theory+1 |
| Minimum Bit Flips to Convert Number | Easy | 87.8% | 37.5% | Bit Manipulation |
| Rotting Oranges | Medium | 58.1% | 37.5% | ArrayBreadth-First SearchMatrix |
| Non-overlapping Intervals | Medium | 56.7% | 37.5% | ArrayDynamic ProgrammingGreedy+1 |
| Coin Change | Medium | 47.9% | 37.5% | ArrayDynamic ProgrammingBreadth-First Search |
| Last Stone Weight | Easy | 66.3% | 37.5% | ArrayHeap (Priority Queue) |
| Optimal Partition of String | Medium | 78.4% | 37.5% | Hash TableStringGreedy |
| Simplify Path | Medium | 50.0% | 37.5% | StringStack |
| Valid Palindrome II | Easy | 44.0% | 37.5% | Two PointersStringGreedy |
| Minimum Number of Moves to Make Palindrome | Hard | 52.6% | 37.5% | Two PointersStringGreedy+1 |
| Number of Substrings With Only 1s | Medium | 57.4% | 37.5% | MathString |
| First Unique Character in a String | Easy | 65.0% | 37.5% | Hash TableStringQueue+1 |
| Minimize Maximum Pair Sum in Array | Medium | 83.3% | 37.5% | ArrayTwo PointersGreedy+1 |
| Add Two Numbers | Medium | 47.9% | 37.5% | Linked ListMathRecursion |
| Find Resultant Array After Removing Anagrams | Easy | 69.9% | 37.5% | ArrayHash TableString+1 |
| Trapping Rain Water | Hard | 66.8% | 37.5% | ArrayTwo PointersDynamic Programming+2 |
| Longest Valid Parentheses | Hard | 38.0% | 37.5% | StringDynamic ProgrammingStack |
| Minimum Insertion Steps to Make a String Palindrome | Hard | 73.6% | 37.5% | StringDynamic Programming |
| Partition Labels | Medium | 81.8% | 37.5% | Hash TableTwo PointersString+1 |
| Minimize XOR | Medium | 62.4% | 37.5% | GreedyBit Manipulation |
| Generate Parentheses | Medium | 78.2% | 37.5% | StringDynamic ProgrammingBacktracking |
| Kth Largest Element in an Array | Medium | 68.8% | 37.5% | ArrayDivide and ConquerSorting+2 |
| Max Consecutive Ones | Easy | 64.6% | 37.5% | Array |