5 Longest Palindromic Substring 23.0% Medium Please go through the code and run it on leetcode platform if you can. 54 Spiral Matrix 22.5% Medium 199 Binary Tree Right Side View 34.3% Medium 127 Word Ladder 19.6% Medium 295 Find Median from Data Stream 22.0% Hard It's never too late to learn to be a master, 1 Two Sum 23.0% Easy 85 Maximal Rectangle 23.4% Hard 206 Reverse Linked List 39.4% Easy This is a repository containing the list of company wise questions available on leetcode premium. 78 Subsets 31.3% Medium Two Sum 23.0% Easy 240 Search a 2D Matrix II 34.4% Medium 141 Linked List Cycle 37.0% Medium 127 Word Ladder 19.6% Medium 10 Regular Expression Matching 22.0% Hard 4 Median of Two Sorted Arrays 18.6% Hard 273 Integer to English Words 18.7% Hard All Problems LeetCode Curated Algo 170 LeetCode Curated SQL 70 Top 100 Liked … 160 Intersection of Two Linked Lists 30.2% Easy 266 Palindrome Permutation 50.4% Easy 155 Min Stack 22.0% Easy 482 License Key … LinkedIn(39) 1 Two Sum 23.0% Easy 21 Merge Two Sorted Lists 35.4% Easy 23 Merge k Sorted Lists 23.3% Hard 33 Search in Rotated Sorted Array 30.2% Hard 34 Search for a Range 29.1% Medium 46 Permutations 35.7% Medium 47 Permutations II 28.0% Medium 50 Pow(x, n) 27.9% Medium 53 … 23 Merge k Sorted Lists 23.3% Hard 168 Excel Sheet Column Title 21.6% Easy I put these questions in Google Spreadsheet. 249 Group Shifted Strings 31.3% Easy download the GitHub extension for Visual Studio. Python, 157 Read N Characters Given Read4 29.5% Easy 146 LRU Cache 15.8% Hard 321 Create Maximum Number 20.8% Hard 39 Combination Sum 30.9% Medium 235 Lowest Common Ancestor of a Binary Search Tree 37.7% Easy 318 Maximum Product of Word Lengths 39.6% Medium 23 Merge k Sorted Lists 23.3% Hard 240 Search a 2D Matrix II 34.4% Medium Comparing the most frequent problem (Two Sum) to the hundredth most frequent at this time (Design HashMap), you can see a dramatic drop in reported interview occurrences. 259 3Sum Smaller 38.2% Medium 103 Binary Tree Zigzag Level Order Traversal 28.6% Medium 301 Remove Invalid Parentheses 31.9% Hard Some companies are constantly creating new questions. This is a repository containing the list of company wise questions available on leetcode premium. 284 Peeking Iterator 33.5% Medium, Yahoo(11) 17 Letter Combinations of a Phone Number 28.6% Medium 206 Reverse Linked List 39.4% Easy 238 Product of Array Except Self 42.6% Medium 189 Rotate Array 21.1% Easy 21 Merge Two Sorted Lists 35.4% Easy 270 Closest Binary Search Tree Value 34.3% Easy You have solved 46 / 177 problems. 102 Binary Tree Level Order Traversal 32.7% Easy 202 Happy Number 36.5% Easy Internally at Google, there is a widely circulated doc (called “The LeetCode Problem”) which discusses this issue in depth. 91 Decode Ways 17.5% Medium 228 Summary Ranges 24.1% Medium 136 Single Number 49.6% Medium 236 Lowest Common Ancestor of a Binary Tree 28.8% Medium 274 H-Index 29.3% Medium 26 Remove Duplicates from Sorted Array 33.4% Easy 297 Serialize and Deserialize Binary Tree 27.8% Hard 17 Letter Combinations of a Phone Number 28.6% Medium Log in now. 150 Evaluate Reverse Polish Notation 23.5% Medium This field is for validation purposes and should be left unchanged. 297 Serialize and Deserialize Binary Tree 27.8% Hard 221 Maximal Square 23.5% Medium 285 Inorder Successor in BST 35.6% Medium 125 Valid Palindrome 23.8% Easy 231 Power of Two 36.4% Easy You can leave a comment or email us at [email protected] 2 Add Two Numbers 23.0% Medium 336 Palindrome Pairs 19.5% Hard 314 Binary Tree Vertical Order Traversal 30.3% Medium 76 Minimum Window Substring 21.2% Hard 155 Min Stack 22.0% Easy Second, if you have trouble solving even easy LeetCode problems, you are not alone either. 70 Climbing Stairs 36.7% Easy This page updates weekly on Saturday. 66 Plus One 33.5% Easy 57 Insert Interval 23.8% Hard 278 First Bad Version 22.4% Easy 242 Valid Anagram 41.7% Easy, Palantir(7) 152 Maximum Product Subarray 22.1% Medium 124 Binary Tree Maximum Path Sum 23.3% Hard 256 Paint House 42.6% Medium 2 Comments. 102 Binary Tree Level Order Traversal 32.7% Easy Start solving easy problems first. 312 Burst Balloons 36.4% Hard 225 Implement Stack using Queues 30.5% Easy 53 Maximum Subarray 36.6% Medium 76 Minimum Window Substring 21.2% Hard 139 Word Break 25.2% Medium 191 Number of 1 Bits 37.5% Easy 49 Group Anagrams 27.4% Medium 272 Closest Binary Search Tree Value II 33.1% Hard 209 Minimum Size Subarray Sum 26.8% Medium 683 K Empty Slots. 257 Binary Tree Paths 28.4% Easy 195 Tenth Line 32.4% Easy 236 Lowest Common Ancestor of a Binary Tree 28.8% Medium 218 The Skyline Problem 22.0% Hard 253 Meeting Rooms II 34.6% Medium 141 Linked List Cycle 37.0% Medium 336 Palindrome Pairs 19.5% Hard, Facebook(79) Seems like even the allegedly "top" solution is blissfully unaware of what std::vector really is, so in terms of performance even the allegedly "top" solution must still be much slower than it has to be. 56 Merge Intervals 25.3% Hard L'inscription et … 4 Median of Two Sorted Arrays 18.6% Hard Sorted by frequency of problems that appear in real interviews. 80 Remove Duplicates from Sorted Array II 32.7% Medium 298 Binary Tree Longest Consecutive Sequence 36.9% Medium 388 Longest Absolute File Path. 121 Best Time to Buy and Sell Stock 36.0% Easy 207 Course Schedule 26.8% Medium 94 Binary Tree Inorder Traversal 39.6% Medium Data Science, 221 Maximal Square 23.5% Medium 240 Search a 2D Matrix II 34.4% Medium 23 Merge k Sorted Lists 23.3% Hard 102 Binary Tree Level Order Traversal 32.7% Easy It has just about every problem you can imagine. Last updated: October 2, 2017. Company. 215 Kth Largest Element in an Array 33.1% Medium 151 Reverse Words in a String 15.7% Medium 206 Reverse Linked List 39.4% Easy 22 Generate Parentheses 36.9% Medium In addition, they have problem sets based on company questions (for Premium members). 3 Longest Substring Without Repeating Characters 21.9% Medium 189 Rotate Array 21.1% Easy 155 Min Stack 22.0% Easy Some spent days on an easy problem and still couldn’t do it. 17 Letter Combinations of a Phone Number 28.6% Medium 26 Remove Duplicates from Sorted Array 33.4% Easy , can you update this list please ? 172 Factorial Trailing Zeroes 32.7% Easy 206 Reverse Linked List 39.4% Easy 47 Permutations II 28.0% Medium 42 Trapping Rain Water 32.2% Hard 200 Number of Islands 27.6% Medium 303 Range Sum Query – Immutable 24.4% Easy 91 Decode Ways 17.5% Medium 103 Binary Tree Zigzag Level Order Traversal 28.6% Medium 98 Validate Binary Search Tree 20.9% Medium That means I need to practice about 10 questions daily because of the limited time I had. 230 Kth Smallest Element in a BST 37.6% Medium 247 Strobogrammatic Number II 34.1% Medium 251 Flatten 2D Vector 33.8% Medium 117 Populating Next Right Pointers in Each Node II 32.8% Hard 297 Serialize and Deserialize Binary Tree 27.8% Hard, Dropbox(7) 46 Permutations 35.7% Medium 133 Clone Graph 24.9% Medium c++ greedy maximum-profit-problem This repo is a collection of coding problems from leetcode premium. 274 H-Index 29.3% Medium Many other LeetCode questions are a mash of the techniques from these individual questions. et al. 23 Merge k Sorted Lists 23.3% Hard 163 Missing Ranges 29.2% Medium 127 Word Ladder 19.6% Medium When that same question is posted to leetcode, you don't have a person to talk to and everyone assumes needing hints means you're doing poorly. 314 Binary Tree Vertical Order Traversal 30.3% Medium, Apple(28) Problems are either Easy or Medium. 54 Spiral Matrix 22.5% Medium 292 Nim Game 52.7% Easy, URL for this post : http://www.learn4master.com/algorithms/leetcode-problems-classified-by-company. Looking at the problems on Leetcode sorted by overall frequency, I get the impression that the top 50-70 problems are substantially more likely to show up in interviews than the lower ranked problems. 325 Maximum Size Subarray Sum Equals k 39.9% Easy, Adobe(12) In fact, many companies (including the Big 5 tech giants) use interview questions they find on LeetCode! Do not spend more than 1-2 hours on reseaching this. If you want to contribute, please email us. 50 Pow(x, n) 27.9% Medium 239 Sliding Window Maximum 27.3% Hard 155 Min Stack 22.0% Easy 127 Word Ladder 19.6% Medium Companies are taking steps to fight the issue of leaked questions: Google actively “bans” leaked questions. 125 Valid Palindrome 23.8% Easy 63 Unique Paths II 29.3% Medium 121 Best Time to Buy and Sell Stock 36.0% Easy 101 Symmetric Tree 33.9% Easy What does LeetCode do? Leetcode isn’t the issue here. 332 Reconstruct Itinerary 23.8% Medium You have solved 88 / 99 problems. Registrati e fai offerte sui lavori gratuitamente. 202 Happy Number 36.5% Easy 25 Reverse Nodes in k-Group 27.5% Hard LeetCode Premium categorizes additional problem sets by company so you can practice the most relevant problems for your upcoming interviews at Google, Facebook, Microsoft, Amazon, Apple, Netflix, Uber, Slack, and more. 33 Search in Rotated Sorted Array 30.2% Hard 20 Valid Parentheses 29.3% Easy 15 3Sum 18.8% Medium LeetCode also has monthly coding challenges, which are a fun way to hone your skills quickly. 237 Delete Node in a Linked List 43.7% Easy 206 Reverse Linked List 39.4% Easy 297 Serialize and Deserialize Binary Tree 27.8% Hard 283 Move Zeroes 44.0% Easy 62 Unique Paths 36.2% Medium 117 Populating Next Right Pointers in Each Node II 32.8% Hard 302 Smallest Rectangle Enclosing Black Pixels 39.0% Hard Every pdf file in this repository corresponds to a list of questions on leetcode for a specific company based on the leetcode company tags. 146 LRU Cache 15.8% Hard 149 Max Points on a Line 14.2% Hard 161 One Edit Distance 28.4% Medium 42 Trapping Rain Water 32.2% Hard 207 Course Schedule 26.8% Medium 53 Maximum Subarray 36.6% Medium The mission of LeetCode is to help software engineers enhance their skills, expand their knowledge, and prepare for technical interviews. 158 Read N Characters Given Read4 II – Call multiple times 23.4% Hard 218 The Skyline Problem 22.0% Hard 149 Max Points on a Line 14.2% Hard 235 Lowest Common Ancestor of a Binary Search Tree 37.7% Easy 20 Valid Parentheses 29.3% Easy 69 Sqrt(x) 25.2% Medium 239 Sliding Window Maximum 27.3% Hard Algorithms, 2 Add Two Numbers 23.0% Medium 238 Product of Array Except Self 42.6% Medium 205 Isomorphic Strings 29.5% Easy These problems are also available on LeetCode … 138 Copy List with Random Pointer 26.1% Hard 329 Longest Increasing Path in a Matrix 31.2% Hard 273 Integer to English Words 18.7% Hard 121 Best Time to Buy and Sell Stock 36.0% Easy 39 Combination Sum 30.9% Medium 116 Populating Next Right Pointers in Each Node 36.5% Medium 5 Longest Palindromic Substring 23.0% Medium 207 Course Schedule 26.8% Medium 186 Reverse Words in a String II 29.1% Medium 47 Permutations II 28.0% Medium 297 Serialize and Deserialize Binary Tree 27.8% Hard 126 Word Ladder II 13.6% Hard 73 Set Matrix Zeroes 33.4% Medium 275 H-Index II 32.5% Medium It's because leetcode follows a different format than interviews, but everyone tries to treat them the same. 52 N-Queens II 39.2% Hard 166 Fraction to Recurring Decimal 15.1% Medium 118 Pascal’s Triangle 33.3% Easy 174 Dungeon Game 20.8% Hard 173 Binary Search Tree Iterator 34.5% Medium 8 String to Integer (atoi) 13.5% Easy 114 Flatten Binary Tree to Linked List 31.0% Medium 11 Container With Most Water 34.5% Medium 96 Unique Binary Search Trees 37.4% Medium 269 Alien Dictionary 22.9% Hard This is a repository containing the list of company wise questions available on leetcode premium. 258 Add Digits 48.4% Easy 311 Sparse Matrix Multiplication 47.2% Medium Solve a bunch of easies and think about how you can solve it a different way. 239 Sliding Window Maximum 27.3% Hard 126 Word Ladder II 13.6% Hard 204 Count Primes 24.2% Easy 277 Find the Celebrity 35.1% Medium 56 Merge Intervals 25.3% Hard 33 Search in Rotated Sorted Array 30.2% Hard 215 Kth Largest Element in an Array 33.1% Medium 49 Group Anagrams 27.4% Medium 220 Contains Duplicate III 18.5% Medium 42 Trapping Rain Water 32.2% Hard 200 Number of Islands 27.6% Medium Learn more. 98 Validate Binary Search Tree 20.9% Medium 125 Valid Palindrome 23.8% Easy 75 Sort Colors 34.7% Medium 236 Lowest Common Ancestor of a Binary Tree 28.8% Medium 162 Find Peak Element 33.0% Medium 127 Word Ladder 19.6% Medium Filter problems by company name. 266 Palindrome Permutation 50.4% Easy 50 Pow(x, n) 27.9% Medium 131 Palindrome Partitioning 27.6% Medium 169 Majority Element 41.1% Easy 213 House Robber II 30.5% Medium The problem isn't Big N using leetcode, the problem is when small fry companies think they are hot shit and ask leetcode questions too. 4 Median of Two Sorted Arrays 18.6% Hard 198 House Robber 34.2% Easy 42 Trapping Rain Water 32.2% Hard 218 The Skyline Problem 22.0% Hard 33 Search in Rotated Sorted Array 30.2% Hard If nothing happens, download Xcode and try again. Those problems are good practice to be familar with company's mostly asked problems. 173 Binary Search Tree Iterator 34.5% Medium 4 Median of Two Sorted Arrays 18.6% Hard 57 Insert Interval 23.8% Hard Spend about a week solving at least 3-5 problems each day. 104 Maximum Depth of Binary Tree 47.8% Easy 219 Contains Duplicate II 29.9% Easy Additionally, it’s 100% completely okay if you can’t solve a LeetCode problem and look at the solution. July 1, 2016 Author: david. 218 The Skyline Problem 22.0% Hard In an interview, sometimes you get an intentionally vague problem and asking questions to clarify it is part of the interview. 118 Pascal’s Triangle 33.3% Easy Cerca lavori di Leetcode problems classified by company o assumi sulla piattaforma di lavoro freelance più grande al mondo con oltre 18 mln di lavori. 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