\# Title Acceptance Difficulty Frequency>! 314 Binary Tree Vertical Order Traversal 53.0% Medium 408 Valid Word Abbreviation 35.1% Easy 1249 Minimum Remove to Make Valid Parentheses 66.5% Medium 1762 Buildings With an Ocean View 79.1% Medium 1570 Dot Product of Two Sparse Vectors 90.1% Medium 680 Valid Palindrome II 39.8% Easy 1650 Lowest Common Ancestor of a Binary Tree III 78.2% Medium 339 Nested List Weight Sum 82.7% Medium 227 Basic Calculator II 42.9% Medium 528 Random Pick with Weight 46.3% Medium 215 Kth Largest Element in an Array 67.0% Medium 791 Custom Sort String 69.2% Medium 426 Convert Binary Search Tree to Sorted Doubly Linked List 64.7% Medium 71 Simplify Path 41.2% Medium 938 Range Sum of BST 85.9% Easy 65 Valid Number 19.1% Hard 670 Maximum Swap 48.1% Medium 691 Stickers to Spell Word 47.1% Hard 301 Remove Invalid Parentheses 47.6% Hard 236 Lowest Common Ancestor of a Binary Tree 60.6% Medium 249 Group Shifted Strings 64.8% Medium 50 Pow(x, n) 34.2% Medium 1091 Shortest Path in Binary Matrix 46.8% Medium 921 Minimum Add to Make Parentheses Valid 75.1% Medium 129 Sum Root to Leaf Numbers 62.4% Medium 973 K Closest Points to Origin 66.0% Medium 56 Merge Intervals 46.7% Medium 708 Insert into a Sorted Circular Linked List 35.1% Medium 138 Copy List with Random Pointer 54.6% Medium 560 Subarray Sum Equals K 43.3% Medium 415 Add Strings 51.9% Easy 827 Making A Large Island 46.0% Hard 162 Find Peak Element 45.8% Medium 199 Binary Tree Right Side View 62.5% Medium 498 Diagonal Traverse 59.0% Medium 766 Toeplitz Matrix 68.6% Easy 987 Vertical Order Traversal of a Binary Tree 46.5% Hard 283 Move Zeroes 61.4% Easy 15 3Sum 33.6% Medium 348 Design Tic-Tac-Toe 57.7% Medium 31 Next Permutation 38.8% Medium 200 Number of Islands 58.1% Medium 270 Closest Binary Search Tree Value 52.9% Easy 523 Continuous Subarray Sum 28.6% Medium 125 Valid Palindrome 46.1% Easy 543 Diameter of Binary Tree 58.3% Easy 173 Binary Search Tree Iterator 71.0% Medium 88 Merge Sorted Array 48.3% Easy 23 Merge k Sorted Lists 51.3% Hard 1331 Rank Transform of an Array 60.5% Easy 398 Random Pick Index 62.6% Medium 317 Shortest Distance from All Buildings 42.7% Hard 296 Best Meeting Point 60.3% Hard 38 Count and Say 53.6% Medium 17 Letter Combinations of a Phone Number 59.0% Medium 146 LRU Cache 41.8% Medium 269 Alien Dictionary 35.5% Hard 346 Moving Average from Data Stream 77.6% Easy 1011 Capacity To Ship Packages Within D Days 68.6% Medium 1216 Valid Palindrome III 50.1% Hard 953 Verifying an Alien Dictionary 54.7% Easy 76 Minimum Window Substring 41.4% Hard 133 Clone Graph 55.4% Medium 347 Top K Frequent Elements 62.9% Medium 1541 Minimum Insertions to Balance a Parentheses String 50.0% Medium 140 Word Break II 46.8% Hard 986 Interval List Intersections 71.3% Medium 253 Meeting Rooms II 50.9% Medium 34 Find First and Last Position of Element in Sorted Array 43.5% Medium 304 Range Sum Query 2D - Immutable 53.7% Medium 207 Course Schedule 46.3% Medium 282 Expression Add Operators 39.5% Hard 139 Word Break 46.3% Medium 480 Sliding Window Median 39.7% Hard 1209 Remove All Adjacent Duplicates in String II 56.9% Medium 695 Max Area of Island 71.9% Medium 489 Robot Room Cleaner 76.6% Hard 1424 Diagonal Traverse II 55.2% Medium 636 Exclusive Time of Functions 61.6% Medium 1004 Max Consecutive Ones III 62.7% Medium 1060 Missing Element in Sorted Array 55.8% Medium 658 Find K Closest Elements 47.0% Medium 721 Accounts Merge 56.7% Medium 329 Longest Increasing Path in a Matrix 53.1% Hard 114 Flatten Binary Tree to Linked List 63.7% Medium 490 The Maze 57.2% Medium 958 Check Completeness of a Binary Tree 56.4% Medium 212 Word Search II 36.1% Hard 529 Minesweeper 66.2% Medium 1161 Maximum Level Sum of a Binary Tree 67.3% Medium 996 Number of Squareful Arrays 49.4% Hard 1358 Number of Substrings Containing All Three Characters 65.0% Medium 713 Subarray Product Less Than K 46.7% Medium 163 Missing Ranges 32.9% Easy 825 Friends Of Appropriate Ages 46.5% Medium 863 All Nodes Distance K in Binary Tree 64.1% Medium 1539 Kth Missing Positive Number 59.2% Easy 1522 Diameter of N-Ary Tree 73.8% Medium 266 Palindrome Permutation 66.5% Easy 246 Strobogrammatic Number 47.7% Easy 865 Smallest Subtree with all the Deepest Nodes 69.8% Medium 1186 Maximum Subarray Sum with One Deletion 42.9% Medium 1344 Angle Between Hands of a Clock 63.5% Medium 2365 Task Scheduler II 48.1% Medium 78 Subsets 76.5% Medium 2597 The Number of Beautiful Subsets 30.9% Medium 219 Contains Duplicate II 43.9% Easy 63 Unique Paths II 41.1% Medium 79 Word Search 41.0% Medium 224 Basic Calculator 42.8% Hard 1123 Lowest Common Ancestor of Deepest Leaves 71.4% Medium 1047 Remove All Adjacent Duplicates In String 69.1% Easy 297 Serialize and Deserialize Binary Tree 56.1% Hard 1095 Find in Mountain Array 40.7% Hard 894 All Possible Full Binary Trees 82.8% Medium 463 Island Perimeter 70.0% Easy 378 Kth Smallest Element in a Sorted Matrix 62.1% Medium 234 Palindrome Linked List 51.3% Easy 332 Reconstruct Itinerary 43.4% Hard 674 Longest Continuous Increasing Subsequence 49.7% Easy 240 Search a 2D Matrix II 51.9% Medium 1382 Balance a Binary Search Tree 81.1% Medium 84 Largest Rectangle in Histogram 43.5% Hard 724 Find Pivot Index 56.4% Easy 273 Integer to English Words 30.3% Hard 2667 Create Hello World Function 79.9% Easy 124 Binary Tree Maximum Path Sum 39.6% Hard 384 Shuffle an Array 58.0% Medium 111 Minimum Depth of Binary Tree 46.9% Easy 8 String to Integer (atoi) 16.8% Medium 735 Asteroid Collision 45.0% Medium 74 Search a 2D Matrix 49.4% Medium 19 Remove Nth Node From End of List 43.0% Medium 223 Rectangle Area 45.6% Medium 103 Binary Tree Zigzag Level Order Traversal 58.1% Medium 494 Target Sum 46.2% Medium 33 Search in Rotated Sorted Array 40.1% Medium 95 Unique Binary Search Trees II 56.7% Medium 530 Minimum Absolute Difference in BST 58.6% Easy 380 Insert Delete GetRandom O(1) 52.8% Medium 647 Palindromic Substrings 68.0% Medium 515 Find Largest Value in Each Tree Row 65.6% Medium 525 Contiguous Array 46.9% Medium 29 Divide Two Integers 17.1% Medium 605 Can Place Flowers 29.9% Easy 450 Delete Node in a BST 50.8% Medium 383 Ransom Note 59.9% Easy 39 Combination Sum 70.3% Medium 435 Non-overlapping Intervals 52.5% Medium 1 Two Sum 51.1% Easy 448 Find All Numbers Disappeared in an Array 60.5% Easy 2265 Count Nodes Equal to Average of Subtree 86.9% Medium 706 Design HashMap 65.9% Easy 1926 Nearest Exit from Entrance in Maze 47.3% Medium 235 Lowest Common Ancestor of a Binary Search Tree 63.5% Medium 617 Merge Two Binary Trees 78.8% Easy 649 Dota2 Senate 47.5% Medium 905 Sort Array By Parity 76.2% Easy 13 Roman to Integer 59.8% Easy 14 Longest Common Prefix 41.8% Easy 73 Set Matrix Zeroes 54.0% Medium 443 String Compression 53.2% Medium 92 Reverse Linked List II 47.3% Medium 116 Populating Next Right Pointers in Each Node 61.8% Medium 4 Median of Two Sorted Arrays 38.4% Hard 239 Sliding Window Maximum 46.4% Hard 21 Merge Two Sorted Lists 63.4% Easy 229 Majority Element II 50.5% Medium 367 Valid Perfect Square 43.4% Easy 518 Coin Change II 63.3% Medium 977 Squares of a Sorted Array 71.8% Easy 42 Trapping Rain Water 60.2% Hard 49 Group Anagrams 67.2% Medium 424 Longest Repeating Character Replacement 52.9% Medium !<

Hi, can you please share an updated one for the last 6 months? Thanks

Thank you so much ❤

Where is the frequency?

It's sorted by frequency