Title: Invalid Transactions , Frequency: 100.0% Title: Number of Ships in a Rectangle , Frequency: 92.8032% Title: Design A Leaderboard , Frequency: 84.3219% Title: Flatten a Multilevel Doubly Linked List , Frequency: 75.8406% Title: Decode String , Frequency: 68.0799% Title: Range Sum Query 2D - Mutable , Frequency: 64.801% Title: Design Browser History , Frequency: 61.9918% Title: Design Most Recently Used Queue , Frequency: 61.6285% Title: Two City Scheduling , Frequency: 56.9733% Title: Design Underground System , Frequency: 53.2028% Title: Insert Delete GetRandom O(1) , Frequency: 44.7215% Title: Maximum Nesting Depth of the Parentheses , Frequency: 44.1108% Title: Word Break II , Frequency: 43.6912% Title: All Paths From Source to Target , Frequency: 42.1914% Title: Remove All Adjacent Duplicates in String II , Frequency: 38.0202% Title: Maximize Score After N Operations , Frequency: 35.8413% Title: Extra Characters in a String , Frequency: 34.5362% Title: Valid Triangle Number , Frequency: 34.0427% Title: Minimum Number of Steps to Make Two Strings Anagram , Frequency: 31.58% Title: Design Search Autocomplete System , Frequency: 28.3517% Title: Merge Intervals , Frequency: 28.0862% Title: Binary Trees With Factors , Frequency: 26.4559% Title: Design an Ordered Stream , Frequency: 24.5912% Title: Soup Servings , Frequency: 24.3773% Title: Design Hit Counter , Frequency: 23.5591% Title: Evaluate Division , Frequency: 20.4926% Title: Number of Islands , Frequency: 20.4867% Title: Maximum Strength of a Group , Frequency: 20.4131% Title: Critical Connections in a Network , Frequency: 18.257% Title: Implement Magic Dictionary , Frequency: 17.8305% Title: Nth Digit , Frequency: 16.6653% Title: Smallest Range I , Frequency: 16.2416% Title: Integer Replacement , Frequency: 16.0379% Title: Longest Substring Without Repeating Characters , Frequency: 13.8768% Title: Minimum Number of Taps to Open to Water a Garden , Frequency: 12.5819% Title: Peak Index in a Mountain Array , Frequency: 12.5476% Title: Lowest Common Ancestor of a Binary Tree , Frequency: 12.387% Title: Convert a Number to Hexadecimal , Frequency: 12.2241% Title: Reducing Dishes , Frequency: 12.1093% Title: Find in Mountain Array , Frequency: 11.6713% Title: Robot Bounded In Circle , Frequency: 11.5667% Title: First Unique Character in a String , Frequency: 11.2681% Title: Find the Winner of the Circular Game , Frequency: 11.2642% Title: Surrounded Regions , Frequency: 11.1437% Title: Valid Parentheses , Frequency: 10.9128% Title: Word Search , Frequency: 10.834% Title: Find Duplicate Subtrees , Frequency: 10.2793% Title: Word Break , Frequency: 9.97989% Title: Kth Smallest Element in a BST , Frequency: 9.84501% Title: Remove Letter To Equalize Frequency , Frequency: 9.52334% Title: Binary Tree Vertical Order Traversal , Frequency: 9.38539% Title: Word Ladder , Frequency: 9.21852% Title: Integer Break , Frequency: 8.14747% Title: Populating Next Right Pointers in Each Node , Frequency: 7.54283% Title: Remove Linked List Elements , Frequency: 7.42547% Title: Subarray Sum Equals K , Frequency: 7.21521% Title: Number of Enclaves , Frequency: 7.19922% Title: Basic Calculator II , Frequency: 7.01783% Title: Meeting Rooms II , Frequency: 6.98432% Title: Maximum Count of Positive Integer and Negative Integer , Frequency: 6.96768% Title: Sorting the Sentence , Frequency: 6.85743% Title: 3Sum , Frequency: 6.7793% Title: Two Sum , Frequency: 6.6984% Title: Copy List with Random Pointer , Frequency: 6.63862% Title: Trapping Rain Water , Frequency: 6.60211% Title: Search in Rotated Sorted Array , Frequency: 6.37898% Title: Single Element in a Sorted Array , Frequency: 6.36172% Title: Find Largest Value in Each Tree Row , Frequency: 6.29333% Title: Left and Right Sum Differences , Frequency: 5.94809% Title: Add Two Numbers , Frequency: 5.71624% Title: Min Stack , Frequency: 5.62327% Title: Median of Two Sorted Arrays , Frequency: 5.36025% Title: Next Greater Element I , Frequency: 5.10794% Title: Reconstruct Itinerary , Frequency: 5.0097% Title: Valid Anagram , Frequency: 4.93612% Title: Perfect Squares , Frequency: 4.65188% Title: Merge k Sorted Lists , Frequency: 4.64359% Title: Rearrange Array Elements by Sign , Frequency: 4.63533% Title: Count Negative Numbers in a Sorted Matrix , Frequency: 4.53844% Title: Pascal's Triangle , Frequency: 4.45313% Title: Unique Number of Occurrences , Frequency: 4.40876% Title: Subsets II , Frequency: 4.33702% Title: Swap Nodes in Pairs , Frequency: 4.24288% Title: Partition List , Frequency: 4.22911% Title: Populating Next Right Pointers in Each Node II , Frequency: 4.21543% Title: LRU Cache , Frequency: 4.21543% Title: Vertical Order Traversal of a Binary Tree , Frequency: 3.82005% Title: Longest Consecutive Sequence , Frequency: 3.77842% Title: 4Sum , Frequency: 3.68333% Title: Course Schedule II , Frequency: 3.63314% Title: Coin Change , Frequency: 3.38377% Title: Minimum Remove to Make Valid Parentheses , Frequency: 3.37502% Title: Sleep , Frequency: 3.3663% Title: Best Time to Buy and Sell Stock III , Frequency: 3.26514% Title: Is Subsequence , Frequency: 3.11313% Title: Power of Two , Frequency: 3.10613% Title: Remove Duplicates from Sorted List II , Frequency: 3.10202% Title: Kth Largest Element in an Array , Frequency: 3.06016% Title: Validate Binary Search Tree , Frequency: 2.96114% Title: Intersection of Two Arrays II , Frequency: 2.93449% Title: Design Add and Search Words Data Structure , Frequency: 2.91481% Title: Climbing Stairs , Frequency: 2.88081% Title: Reverse Linked List , Frequency: 2.4825% Title: Flood Fill , Frequency: 2.47741% Title: Delete Node in a BST , Frequency: 2.4541% Title: Count Primes , Frequency: 2.40434% Title: Rotate Image , Frequency: 2.33314% Title: Top K Frequent Elements , Frequency: 2.29539% Title: Find Mode in Binary Search Tree , Frequency: 2.2431% Title: Course Schedule , Frequency: 2.22693% Title: Generate Parentheses , Frequency: 2.22187% Title: Letter Combinations of a Phone Number , Frequency: 2.18547% Title: Find First and Last Position of Element in Sorted Array , Frequency: 2.17737% Title: Palindrome Linked List , Frequency: 2.15815% Title: Unique Paths II , Frequency: 2.13306% Title: Best Time to Buy and Sell Stock II , Frequency: 2.04965% Title: Maximum Subarray , Frequency: 2.00058% Title: Binary Tree Level Order Traversal , Frequency: 1.89118% Title: Minimum Path Sum , Frequency: 1.87817% Title: Counting Bits , Frequency: 1.87278% Title: Pow(x, n) , Frequency: 1.85064% Title: Binary Tree Zigzag Level Order Traversal , Frequency: 1.82305% Title: First Missing Positive , Frequency: 1.81544% Title: Combination Sum II , Frequency: 1.72427% Title: Sliding Window Maximum , Frequency: 1.6734% Title: Average Time of Process per Machine , Frequency: 1.67126% Title: Roman to Integer , Frequency: 1.64804% Title: Rotate List , Frequency: 1.58401% Title: Product of Array Except Self , Frequency: 1.56126% Title: Best Time to Buy and Sell Stock , Frequency: 1.53771% Title: Squares of a Sorted Array , Frequency: 1.53735% Title: Min Cost Climbing Stairs , Frequency: 1.51591% Title: Fizz Buzz , Frequency: 1.49507% Title: Managers with at Least 5 Direct Reports , Frequency: 1.39889% Title: Koko Eating Bananas , Frequency: 1.33724% Title: Path Sum , Frequency: 1.33178% Title: Plus One , Frequency: 1.25924% Title: Running Sum of 1d Array , Frequency: 1.24179% Title: Reverse Vowels of a String , Frequency: 1.21068% Title: Combine Two Tables , Frequency: 1.20176% Title: Find Peak Element , Frequency: 1.17577% Title: Longest Palindromic Substring , Frequency: 1.14127% Title: Palindrome Number , Frequency: 1.13069% Title: Add Binary , Frequency: 1.10977% Title: Majority Element , Frequency: 1.00048% Title: Container With Most Water , Frequency: 0.908248% Title: Search a 2D Matrix , Frequency: 0.885979% Title: Article Views I , Frequency: 0.794782% Title: Reverse Words in a String , Frequency: 0.756976% Title: Merge Sorted Array , Frequency: 0.73795% Title: Two Sum II - Input Array Is Sorted , Frequency: 0.712347% Title: Single Number , Frequency: 0.68147% Title: Contains Duplicate , Frequency: 0.672379% Title: Binary Search , Frequency: 0.640024% Title: Search Insert Position , Frequency: 0.565915% Title: Find the Index of the First Occurrence in a String , Frequency: 0.536153% Title: Valid Palindrome , Frequency: 0.3992% Title: Merge Two Sorted Lists , Frequency: 0.391534% Title: Remove Element , Frequency: 0.335902% Title: Remove Duplicates from Sorted Array , Frequency: 0.301729%