Leetcode problems classified by company | Learn for Master

Leetcode problems classified by company | Learn for Master

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 Maximum Subarray 36.6% Medium
56 Merge Intervals 25.3% Hard
57 Insert Interval 23.8% Hard
65 Valid Number 12.1% Hard
68 Text Justification 16.1% Hard
76 Minimum Window Substring 21.2% Hard
101 Symmetric Tree 33.9% Easy
102 Binary Tree Level Order Traversal 32.7% Easy
103 Binary Tree Zigzag Level Order Traversal 28.6% Medium
104 Maximum Depth of Binary Tree 47.8% Easy
127 Word Ladder 19.6% Medium
149 Max Points on a Line 14.2% Hard
150 Evaluate Reverse Polish Notation 23.5% Medium
152 Maximum Product Subarray 22.1% Medium
156 Binary Tree Upside Down 38.3% Medium
170 Two Sum III – Data structure design 24.0% Easy
173 Binary Search Tree Iterator 34.5% Medium
187 Repeated DNA Sequences 25.2% Medium
198 House Robber 34.2% Easy
205 Isomorphic Strings 29.5% Easy
236 Lowest Common Ancestor of a Binary Tree 28.8% Medium
238 Product of Array Except Self 42.6% Medium
243 Shortest Word Distance 46.3% Easy
244 Shortest Word Distance II 35.3% Medium
245 Shortest Word Distance III 46.0% Medium
254 Factor Combinations 34.7% Medium
256 Paint House 42.6% Medium
277 Find the Celebrity 35.1% Medium
297 Serialize and Deserialize Binary Tree 27.8% Hard
311 Sparse Matrix Multiplication 47.2% Medium
339 Nested List Weight Sum 54.7% Easy

Google(90)

Median of Two Sorted Arrays 18.6% Hard
10 Regular Expression Matching 22.0% Hard
17 Letter Combinations of a Phone Number 28.6% Medium
20 Valid Parentheses 29.3% Easy
22 Generate Parentheses 36.9% Medium
23 Merge k Sorted Lists 23.3% Hard
31 Next Permutation 26.5% Medium
42 Trapping Rain Water 32.2% Hard
44 Wildcard Matching 17.4% Hard
50 Pow(x, n) 27.9% Medium
54 Spiral Matrix 22.5% Medium
56 Merge Intervals 25.3% Hard
57 Insert Interval 23.8% Hard
66 Plus One 33.5% Easy
128 Longest Consecutive Sequence 32.1% Hard
133 Clone Graph 24.9% Medium
139 Word Break 25.2% Medium
140 Word Break II 19.7% Hard
146 LRU Cache 15.8% Hard
155 Min Stack 22.0% Easy
158 Read N Characters Given Read4 II – Call multiple times 23.4% Hard
159 Longest Substring with At Most Two Distinct Characters 34.7% Hard
162 Find Peak Element 33.0% Medium
163 Missing Ranges 29.2% Medium
166 Fraction to Recurring Decimal 15.1% Medium
173 Binary Search Tree Iterator 34.5% Medium
200 Number of Islands 27.6% Medium
208 Implement Trie (Prefix Tree) 25.3% Medium
212 Word Search II 19.3% Hard
214 Shortest Palindrome 19.7% Hard
218 The Skyline Problem 22.0% Hard
224 Basic Calculator 22.1% Hard
228 Summary Ranges 24.1% Medium
230 Kth Smallest Element in a BST 37.6% Medium
231 Power of Two 36.4% Easy
239 Sliding Window Maximum 27.3% Hard
240 Search a 2D Matrix II 34.4% Medium
246 Strobogrammatic Number 36.3% Easy
247 Strobogrammatic Number II 34.1% Medium
249 Group Shifted Strings 31.3% Easy
251 Flatten 2D Vector 33.8% Medium
253 Meeting Rooms II 34.6% Medium
257 Binary Tree Paths 28.4% Easy
259 3Sum Smaller 38.2% Medium
261 Graph Valid Tree 32.5% Medium
266 Palindrome Permutation 50.4% Easy
269 Alien Dictionary 22.9% Hard
270 Closest Binary Search Tree Value 34.3% Easy
271 Encode and Decode Strings 27.1% Medium
272 Closest Binary Search Tree Value II 33.1% Hard
274 H-Index 29.3% Medium
276 Paint Fence 30.9% Easy
279 Perfect Squares 32.5% Medium
280 Wiggle Sort 49.5% Medium
281 Zigzag Iterator 42.8% Medium
282 Expression Add Operators 24.8% Hard
284 Peeking Iterator 33.5% Medium
286 Walls and Gates 37.2% Medium
288 Unique Word Abbreviation 15.7% Easy
289 Game of Life 34.2% Medium
293 Flip Game 49.5% Easy
294 Flip Game II 41.3% Medium
295 Find Median from Data Stream 22.0% Hard
297 Serialize and Deserialize Binary Tree 27.8% Hard
298 Binary Tree Longest Consecutive Sequence 36.9% Medium
302 Smallest Rectangle Enclosing Black Pixels 39.0% Hard
305 Number of Islands II 34.0% Hard
308 Range Sum Query 2D – Mutable 21.6% Hard
309 Best Time to Buy and Sell Stock with Cooldown 36.6% Medium
310 Minimum Height Trees 26.6% Medium
312 Burst Balloons 36.4% Hard
313 Super Ugly Number 33.9% Medium
314 Binary Tree Vertical Order Traversal 30.3% Medium
315 Count of Smaller Numbers After Self 30.1% Hard
316 Remove Duplicate Letters 24.9% Hard
317 Shortest Distance from All Buildings 31.1% Hard
318 Maximum Product of Word Lengths 39.6% Medium
320 Generalized Abbreviation 40.8% Medium
321 Create Maximum Number 20.8% Hard
323 Number of Connected Components in an Undirected Graph 42.8% Medium
324 Wiggle Sort II 22.1% Medium
326 Power of Three 36.5% Easy
327 Count of Range Sum 25.9% Hard
329 Longest Increasing Path in a Matrix 31.2% Hard
330 Patching Array 28.9% Medium
331 Verify Preorder Serialization of a Binary Tree 31.7% Medium
332 Reconstruct Itinerary 23.8% Medium
336 Palindrome Pairs 19.5% Hard
340 Longest Substring with At Most K Distinct Characters 37.2% Hard
341 Flatten Nested List Iterator 19.8% Medium

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