FB 里扣 总结 （至6月）
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整理的FB里扣面试题。如觉得有用请加米。米少真不方便。{:4_92:}
1 Two Sum 23.0% Easy
10 Regular Expression Matching 22.0% Hard
13 Roman to Integer 39.2% Easy
15 3Sum 18.8% Medium
17 Letter Combinations of a Phone Number 28.6% Medium
20 Valid Parentheses 29.3% Easy
23 Merge k Sorted Lists 23.3% Hard
25 Reverse Nodes in k-Group 27.5% Hard
26 Remove Duplicates from Sorted Array 33.4% Easy
28 Implement strStr() 24.8% Easy
33 Search in Rotated Sorted Array 30.2% Hard
38 Count and Say 28.9% Easy
43 Multiply Strings 23.4% Medium
44 Wildcard Matching 17.4% Hard
49 Group Anagrams 27.4% Medium
50 Pow(x, n) 27.9% Medium
56 Merge Intervals 25.3% Hard
57 Insert Interval 23.8% Hard
67 Add Binary 27.4% Easy
69 Sqrt(x) 25.2% Medium
71 Simplify Path 21.9% Medium
75 Sort Colors 34.7% Medium
76 Minimum Window Substring 21.2% Hard
78 Subsets 31.3% Medium
79 Word Search 22.9% Medium
80 Remove Duplicates from Sorted Array II 32.7% Medium
85 Maximal Rectangle 23.4% Hard
88 Merge Sorted Array 30.0% Easy
90 Subsets II 30.5% Medium
91 Decode Ways 17.5% Medium
98 Validate Binary Search Tree 20.9% Medium
102 Binary Tree Level Order Traversal 32.7% Easy
117 Populating Next Right Pointers in Each Node II 32.8% Hard
121 Best Time to Buy and Sell Stock 36.0% Easy
125 Valid Palindrome 23.8% Easy
127 Word Ladder 19.6% Medium
128 Longest Consecutive Sequence 32.1% Hard
133 Clone Graph 24.9% Medium
139 Word Break 25.2% Medium
146 LRU Cache 15.8% Hard
157 Read N Characters Given Read4 29.5% Easy
158 Read N Characters Given Read4 II – Call multiple times 23.4% Hard
161 One Edit Distance 28.4% Medium
168 Excel Sheet Column Title 21.6% Easy
173 Binary Search Tree Iterator 34.5% Medium
200 Number of Islands 27.6% Medium
206 Reverse Linked List 39.4% Easy
208 Implement Trie (Prefix Tree) 25.3% Medium
209 Minimum Size Subarray Sum 26.8% Medium
210 Course Schedule II 21.0% Medium
211 Add and Search Word – Data structure design 20.2% Medium
215 Kth Largest Element in an Array 33.1% Medium
218 The Skyline Problem 22.0% Hard (todo)
221 Maximal Square 23.5% Medium
234 Palindrome Linked List 28.0% Easy
235 Lowest Common Ancestor of a Binary Search Tree 37.7% Easy
236 Lowest Common Ancestor of a Binary Tree 28.8% Medium
238 Product of Array Except Self 42.6% Medium
252 Meeting Rooms 41.6% Easy
253 Meeting Rooms II 34.6% Medium
257 Binary Tree Paths 28.4% Easy
261 Graph Valid Tree 32.5% Medium
265 Paint House II 35.6% Hard
269 Alien Dictionary 22.9% Hard
273 Integer to English Words 18.7% Hard
274 H-Index 29.3% Medium
275 H-Index II 32.5% Medium
277 Find the Celebrity 35.1% Medium
278 First Bad Version 22.4% Easy
282 Expression Add Operators 24.8% Hard
283 Move Zeroes 44.0% Easy
285 Inorder Successor in BST 35.6% Medium
286 Walls and Gates 37.2% Medium
297 Serialize and Deserialize Binary Tree 27.8% Hard
301 Remove Invalid Parentheses 31.9% Hard
311 Sparse Matrix Multiplication 47.2% Medium
314 Binary Tree Vertical Order Traversal 30.3% Medium ?
325 Maximum Size Subarray Sum Equals k 39.9% Easy
334 Increasing Triplet Subsequence 33.2% Medium
341 Flatten Nested List Iterator
377 Combination Sum IV
380 Insert Delete GetRandom O(1)
398 Random Pick Index ?
404 Sum of Left Leaves
410 Split Array Largest Sum
461 Hamming Distance
477 Total Hamming Distance
494 Target Sum
523 Continuous Subarray Sum
525 Contiguous Array
534 Design TinyURL
535 Encode and Decode TinyURL
543 Diameter of Binary Tree
554 Brick Wall
572 Subtree of Another Tree
578 Get Highest Answer Rate Question
621 Task Scheduler
636 Exclusive Time of Functions
637 Average of Levels in Binary Tree
639 Decode Ways II
642 Design Search Autocomplete System
647 Palindromic Substrings
653 Two Sum IV – Input is a BST
670 Maximum Swap
673 Number of Longest Increasing Subsequence
674 Longest Continuous Increasing Subsequence
680 Valid Palindrome II
689 Maximum Sum of 3 Non-Overlapping Subarrays
714 Best Time to Buy and Sell Stock with Transaction Fee 43.4% Medium
745 Prefix and Suffix Search (/problems/prefix-and-suffix-search/) 23.7% Hard
750 Number Of Corner Rectangles (/problems/number-of-corner-rectangles/) 50.2% Medium
764 Largest Plus Sign (/problems/largest-plus-sign/) 30.0% Medium
597 Friend Requests I: Overall Acceptance Rate 37.7% Easy
602 Friend Requests II: Who Has the Most Friends 42.2% Medium
614 Second Degree Follower 23.2% Medium
1 Two Sum 23.0% Easy
10 Regular Expression Matching 22.0% Hard
13 Roman to Integer 39.2% Easy
15 3Sum 18.8% Medium
17 Letter Combinations of a Phone Number 28.6% Medium
20 Valid Parentheses 29.3% Easy
23 Merge k Sorted Lists 23.3% Hard
25 Reverse Nodes in k-Group 27.5% Hard
26 Remove Duplicates from Sorted Array 33.4% Easy
28 Implement strStr() 24.8% Easy
33 Search in Rotated Sorted Array 30.2% Hard
38 Count and Say 28.9% Easy
43 Multiply Strings 23.4% Medium
44 Wildcard Matching 17.4% Hard
49 Group Anagrams 27.4% Medium
50 Pow(x, n) 27.9% Medium
56 Merge Intervals 25.3% Hard
57 Insert Interval 23.8% Hard
67 Add Binary 27.4% Easy
69 Sqrt(x) 25.2% Medium
71 Simplify Path 21.9% Medium
75 Sort Colors 34.7% Medium
76 Minimum Window Substring 21.2% Hard
78 Subsets 31.3% Medium
79 Word Search 22.9% Medium
80 Remove Duplicates from Sorted Array II 32.7% Medium
85 Maximal Rectangle 23.4% Hard
88 Merge Sorted Array 30.0% Easy
90 Subsets II 30.5% Medium
91 Decode Ways 17.5% Medium
98 Validate Binary Search Tree 20.9% Medium
102 Binary Tree Level Order Traversal 32.7% Easy
117 Populating Next Right Pointers in Each Node II 32.8% Hard
121 Best Time to Buy and Sell Stock 36.0% Easy
125 Valid Palindrome 23.8% Easy
127 Word Ladder 19.6% Medium
128 Longest Consecutive Sequence 32.1% Hard
133 Clone Graph 24.9% Medium
139 Word Break 25.2% Medium
146 LRU Cache 15.8% Hard
157 Read N Characters Given Read4 29.5% Easy
158 Read N Characters Given Read4 II – Call multiple times 23.4% Hard
161 One Edit Distance 28.4% Medium
168 Excel Sheet Column Title 21.6% Easy
173 Binary Search Tree Iterator 34.5% Medium
200 Number of Islands 27.6% Medium
206 Reverse Linked List 39.4% Easy
208 Implement Trie (Prefix Tree) 25.3% Medium
209 Minimum Size Subarray Sum 26.8% Medium
210 Course Schedule II 21.0% Medium
211 Add and Search Word – Data structure design 20.2% Medium
215 Kth Largest Element in an Array 33.1% Medium
218 The Skyline Problem 22.0% Hard (todo)
221 Maximal Square 23.5% Medium
234 Palindrome Linked List 28.0% Easy
235 Lowest Common Ancestor of a Binary Search Tree 37.7% Easy
236 Lowest Common Ancestor of a Binary Tree 28.8% Medium
238 Product of Array Except Self 42.6% Medium
252 Meeting Rooms 41.6% Easy
253 Meeting Rooms II 34.6% Medium
257 Binary Tree Paths 28.4% Easy
261 Graph Valid Tree 32.5% Medium
265 Paint House II 35.6% Hard
269 Alien Dictionary 22.9% Hard
273 Integer to English Words 18.7% Hard
274 H-Index 29.3% Medium
275 H-Index II 32.5% Medium
277 Find the Celebrity 35.1% Medium
278 First Bad Version 22.4% Easy
282 Expression Add Operators 24.8% Hard
283 Move Zeroes 44.0% Easy
285 Inorder Successor in BST 35.6% Medium
286 Walls and Gates 37.2% Medium
297 Serialize and Deserialize Binary Tree 27.8% Hard
301 Remove Invalid Parentheses 31.9% Hard
311 Sparse Matrix Multiplication 47.2% Medium
314 Binary Tree Vertical Order Traversal 30.3% Medium ?
325 Maximum Size Subarray Sum Equals k 39.9% Easy
334 Increasing Triplet Subsequence 33.2% Medium
341 Flatten Nested List Iterator
377 Combination Sum IV
380 Insert Delete GetRandom O(1)
398 Random Pick Index ?
404 Sum of Left Leaves
410 Split Array Largest Sum
461 Hamming Distance
477 Total Hamming Distance
494 Target Sum
523 Continuous Subarray Sum
525 Contiguous Array
534 Design TinyURL
535 Encode and Decode TinyURL
543 Diameter of Binary Tree
554 Brick Wall
572 Subtree of Another Tree
578 Get Highest Answer Rate Question
621 Task Scheduler
636 Exclusive Time of Functions
637 Average of Levels in Binary Tree
639 Decode Ways II
642 Design Search Autocomplete System
647 Palindromic Substrings
653 Two Sum IV – Input is a BST
670 Maximum Swap
673 Number of Longest Increasing Subsequence
674 Longest Continuous Increasing Subsequence
680 Valid Palindrome II
689 Maximum Sum of 3 Non-Overlapping Subarrays
714 Best Time to Buy and Sell Stock with Transaction Fee 43.4% Medium
745 Prefix and Suffix Search (/problems/prefix-and-suffix-search/) 23.7% Hard
750 Number Of Corner Rectangles (/problems/number-of-corner-rectangles/) 50.2% Medium
764 Largest Plus Sign (/problems/largest-plus-sign/) 30.0% Medium
597 Friend Requests I: Overall Acceptance Rate 37.7% Easy
602 Friend Requests II: Who Has the Most Friends 42.2% Medium
614 Second Degree Follower 23.2% Medium
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