s*g
2 楼
frequency排序即可
或者一个个点开看。。。
或者一个个点开看。。。
n*s
3 楼
是需要付费的吗？
免费帐号看不到Frequency
【在 s**********g 的大作中提到】
: frequency排序即可
: 或者一个个点开看。。。
免费帐号看不到Frequency
【在 s**********g 的大作中提到】
: frequency排序即可
: 或者一个个点开看。。。
s*g
4 楼
看了一下，恩有个锁
是要付费看的
如果你已经刷的差不多了要面试了
付25块解锁看一下frequency和收费题，挺值得的
付完就取消，可以用一个月，也不怕忘记取消被再收
【在 n*s 的大作中提到】
: 是需要付费的吗？
: 免费帐号看不到Frequency
是要付费看的
如果你已经刷的差不多了要面试了
付25块解锁看一下frequency和收费题，挺值得的
付完就取消，可以用一个月，也不怕忘记取消被再收
【在 n*s 的大作中提到】
: 是需要付费的吗？
: 免费帐号看不到Frequency
l*7
5 楼
付费就是了,25刀远比不少你浪费的时间值钱
n*s
6 楼
下面这个2015-01-01的仍然有用吗？
http://vlsi1217.github.io/2015/01/01/Leetcode/Frequency/
http://vlsi1217.github.io/2015/01/01/Leetcode/Frequency/
s*g
7 楼
都两年前的了
算了吧
题库都涨了至少1/3了吧？
其实高频才几个题
没啥用
我就没遇到几个高频题
至少medium频率的cover了才敢说大部分面试题可能算cover了吧
【在 n*s 的大作中提到】
: 下面这个2015-01-01的仍然有用吗？
: http://vlsi1217.github.io/2015/01/01/Leetcode/Frequency/
算了吧
题库都涨了至少1/3了吧？
其实高频才几个题
没啥用
我就没遇到几个高频题
至少medium频率的cover了才敢说大部分面试题可能算cover了吧
【在 n*s 的大作中提到】
: 下面这个2015-01-01的仍然有用吗？
: http://vlsi1217.github.io/2015/01/01/Leetcode/Frequency/
n*s
8 楼
高频是5和4，中频是3， 低频是1和2吗？
【在 s**********g 的大作中提到】
: 都两年前的了
: 算了吧
: 题库都涨了至少1/3了吧？
: 其实高频才几个题
: 没啥用
: 我就没遇到几个高频题
: 至少medium频率的cover了才敢说大部分面试题可能算cover了吧
【在 s**********g 的大作中提到】
: 都两年前的了
: 算了吧
: 题库都涨了至少1/3了吧？
: 其实高频才几个题
: 没啥用
: 我就没遇到几个高频题
: 至少medium频率的cover了才敢说大部分面试题可能算cover了吧
s*g
9 楼
leetcode只分三类
他这个5类不知道哪里来的
一共才130个题
现在题库都400+了
这个列表说实话没啥用处
【在 n*s 的大作中提到】
: 高频是5和4，中频是3， 低频是1和2吗？
他这个5类不知道哪里来的
一共才130个题
现在题库都400+了
这个列表说实话没啥用处
【在 n*s 的大作中提到】
: 高频是5和4，中频是3， 低频是1和2吗？
o*q
10 楼
# Title Editorial Acceptance Difficulty Frequency
1
Two Sum 28.3% Easy
292
Nim Game 54.4% Easy
344
Reverse String 57.3% Easy
136
Single Number 52.2% Easy
2
Add Two Numbers 25.6% Medium
371
Sum of Two Integers 51.6% Easy
4
Median of Two Sorted Arrays
20.4% Hard
6
ZigZag Conversion 25.6% Easy
13
Roman to Integer 42.7% Easy
237
Delete Node in a Linked List 45.0% Easy
104
Maximum Depth of Binary Tree 50.2% Easy
191
Number of 1 Bits 38.2% Easy
155
Min Stack 25.4% Easy
151
Reverse Words in a String 15.7% Medium
206
Reverse Linked List 42.7% Easy
146
LRU Cache 15.9% Hard
3
Longest Substring Without Repeating Characters 23.4% Medium
169
Majority Element 44.1% Easy
258
Add Digits 49.9% Easy
226
Invert Binary Tree 49.0% Easy
5
Longest Palindromic Substring 24.0% Medium
283
Move Zeroes 46.9% Easy
141
Linked List Cycle 36.1% Easy
66
Plus One 36.2% Easy
70
Climbing Stairs 38.2% Easy
11
Container With Most Water 35.8% Medium
198
House Robber 36.8% Easy
148
Sort List 26.8% Medium
328
Odd Even Linked List 41.2% Medium
121
Best Time to Buy and Sell Stock 38.4% Easy
20
Valid Parentheses 31.4% Easy
238
Product of Array Except Self 46.0% Medium
12
Integer to Roman 42.1% Medium
38
Count and Say 31.8% Easy
338
Counting Bits 58.9% Medium
388
Longest Absolute File Path 33.2% Medium
202
Happy Number 38.7% Easy
42
Trapping Rain Water 34.6% Hard
217
Contains Duplicate 43.0% Easy
14
Longest Common Prefix 30.1% Easy
172
Factorial Trailing Zeroes 34.5% Easy
171
Excel Sheet Column Number 44.6% Easy
53
Maximum Subarray 38.2% Medium
7
Reverse Integer 23.7% Easy
122
Best Time to Buy and Sell Stock II 44.8% Medium
21
Merge Two Sorted Lists 37.4% Easy
160
Intersection of Two Linked Lists 30.3% Easy
9
Palindrome Number 33.6% Easy
149
Max Points on a Line 15.3% Hard
319
Bulb Switcher 41.6% Medium
326
Power of Three 38.9% Easy
139
Word Break 27.4% Medium
153
Find Minimum in Rotated Sorted Array 38.2% Medium
137
Single Number II 39.7% Medium
384
Shuffle an Array 44.6% Medium
50
Pow(x, n) 27.2% Medium
335
Self Crossing 23.2% Hard
138
Copy List with Random Pointer 26.2% Hard
150
Evaluate Reverse Polish Notation 25.4% Medium
200
Number of Islands 31.2% Medium
10
Regular Expression Matching 23.2% Hard
15
3Sum 20.4% Medium
179
Largest Number 21.0% Medium
49
Group Anagrams 30.8% Medium
242
Valid Anagram 44.2% Easy
223
Rectangle Area 31.5% Easy
235
Lowest Common Ancestor of a Binary Search Tree 37.8% Easy
233
Number of Digit One 26.8% Hard
27
Remove Element 36.3% Easy
17
Letter Combinations of a Phone Number 31.5% Medium
234
Palindrome Linked List 30.9% Easy
118
Pascal's Triangle 36.0% Easy
152
Maximum Product Subarray 23.9% Medium
23
Merge k Sorted Lists
25.3% Hard
67
Add Binary 29.8% Easy
100
Same Tree 44.8% Easy
173
Binary Search Tree Iterator 38.0% Medium
219
Contains Duplicate II 31.1% Easy
88
Merge Sorted Array 31.1% Easy
228
Summary Ranges 27.2% Medium
8
String to Integer (atoi) 13.8% Easy
387
First Unique Character in a String 44.5% Easy
22
Generate Parentheses 40.7% Medium
287
Find the Duplicate Number 41.2% Hard
412
Fizz Buzz 57.6% Easy
26
Remove Duplicates from Sorted Array 35.0% Easy
96
Unique Binary Search Trees 39.3% Medium
48
Rotate Image 36.6% Medium
85
Maximal Rectangle 25.4% Hard
72
Edit Distance 30.2% Hard
189
Rotate Array 23.0% Easy
218
The Skyline Problem 24.8% Hard
164
Maximum Gap 28.2% Hard
56
Merge Intervals 27.7% Hard
33
Search in Rotated Sorted Array 31.6% Hard
128
Longest Consecutive Sequence 34.6% Hard
268
Missing Number 42.9% Medium
54
Spiral Matrix 24.1% Medium
147
Insertion Sort List 31.3% Medium
383
Ransom Note 45.4% Easy
36
Valid Sudoku 33.2% Easy
316
Remove Duplicate Letters 27.9% Hard
46
Permutations 39.3% Medium
345
Reverse Vowels of a String 36.7% Easy
110
Balanced Binary Tree 35.8% Easy
142
Linked List Cycle II 31.2% Medium
374
Guess Number Higher or Lower 32.8% Easy
187
Repeated DNA Sequences 28.7% Medium
240
Search a 2D Matrix II 37.2% Medium
419
Battleships in a Board 59.8% Medium
188
Best Time to Buy and Sell Stock IV 23.6% Hard
273
Integer to English Words 20.6% Hard
349
Intersection of Two Arrays 45.0% Easy
220
Contains Duplicate III 19.4% Medium
336
Palindrome Pairs 23.5% Hard
263
Ugly Number 38.1% Easy
231
Power of Two 38.8% Easy
289
Game of Life 35.9% Medium
260
Single Number III 48.2% Medium
89
Gray Code 38.7% Medium
279
Perfect Squares 34.4% Medium
79
Word Search 24.8% Medium
190
Reverse Bits 29.5% Easy
28
Implement strStr() 26.5% Easy
347
Top K Frequent Elements 44.9% Medium
306
Additive Number 26.9% Medium
229
Majority Element II 27.3% Medium
162
Find Peak Element 35.2% Medium
41
First Missing Positive 24.7% Hard
204
Count Primes 25.8% Easy
69
Sqrt(x) 26.5% Medium
168
Excel Sheet Column Title 23.9% Easy
205
Isomorphic Strings 31.9% Easy
236
Lowest Common Ancestor of a Binary Tree 29.2% Medium
134
Gas Station
28.3% Medium
241
Different Ways to Add Parentheses 40.1% Medium
278
First Bad Version 23.9% Easy
115
Distinct Subsequences 30.3% Hard
120
Triangle 32.0% Medium
73
Set Matrix Zeroes 34.8% Medium
43
Multiply Strings 25.4% Medium
303
Range Sum Query - Immutable 26.0% Easy
19
Remove Nth Node From End of List 31.6% Easy
312
Burst Balloons 41.0% Hard
203
Remove Linked List Elements 30.6% Easy
165
Compare Version Numbers 18.9% Easy
350
Intersection of Two Arrays II 42.9% Easy
108
Convert Sorted Array to Binary Search Tree 39.8% Medium
116
Populating Next Right Pointers in Each Node 36.7% Medium
143
Reorder List 24.3% Medium
290
Word Pattern 31.5% Easy
125
Valid Palindrome 25.0% Easy
24
Swap Nodes in Pairs 36.8% Easy
124
Binary Tree Maximum Path Sum 24.7% Hard
297
Serialize and Deserialize Binary Tree 30.6% Hard
140
Word Break II 21.6% Hard
224
Basic Calculator 24.7% Hard
127
Word Ladder 19.3% Medium
29
Divide Two Integers 15.9% Medium
16
3Sum Closest 30.3% Medium
214
Shortest Palindrome 22.2% Hard
215
Kth Largest Element in an Array 36.5% Medium
232
Implement Queue using Stacks 34.8% Easy
282
Expression Add Operators 27.6% Hard
154
Find Minimum in Rotated Sorted Array II 35.8% Hard
299
Bulls and Cows 32.6% Easy
334
Increasing Triplet Subsequence 37.1% Medium
62
Unique Paths 38.5% Medium
101
Symmetric Tree 36.3% Easy
59
Spiral Matrix II 37.4% Medium
166
Fraction to Recurring Decimal 16.5% Medium
31
Next Permutation 27.9% Medium
315
Count of Smaller Numbers After Self 33.0% Hard
280
Wiggle Sort
53.7% Medium
65
Valid Number 12.5% Hard
64
Minimum Path Sum 36.8% Medium
83
Remove Duplicates from Sorted List 38.4% Easy
76
Minimum Window Substring 23.1% Hard
386
Lexicographical Numbers 37.5% Medium
318
Maximum Product of Word Lengths 41.5% Medium
55
Jump Game 29.0% Medium
324
Wiggle Sort II 24.6% Medium
102
Binary Tree Level Order Traversal 36.0% Easy
135
Candy 23.7% Hard
123
Best Time to Buy and Sell Stock III 27.8% Hard
322
Coin Change 25.8% Medium
75
Sort Colors 36.3% Medium
222
Count Complete Tree Nodes 26.7% Medium
112
Path Sum 32.5% Easy
39
Combination Sum 34.7% Medium
58
Length of Last Word 30.7% Easy
421
Maximum XOR of Two Numbers in an Array 35.4% Medium
311
Sparse Matrix Multiplication 49.5% Medium
327
Count of Range Sum 28.1% Hard
389
Find the Difference 49.9% Easy
343
Integer Break 44.3% Medium
78
Subsets 35.4% Medium
395
Longest Substring with At Least K Repeating Characters 34.5%
Medium
309
Best Time to Buy and Sell Stock with Cooldown 39.2% Medium
133
Clone Graph 24.9% Medium
257
Binary Tree Paths 33.4% Easy
91
Decode Ways 18.5% Medium
301
Remove Invalid Parentheses 34.2% Hard
77
Combinations 37.1% Medium
105
Construct Binary Tree from Preorder and Inorder Traversal 30.3%
Medium
81
Search in Rotated Sorted Array II 32.7% Medium
37
Sudoku Solver 27.3% Hard
208
Implement Trie (Prefix Tree) 25.6% Medium
201
Bitwise AND of Numbers Range 32.7% Medium
51
N-Queens 28.3% Hard
199
Binary Tree Right Side View 37.9% Medium
71
Simplify Path 23.5% Medium
74
Search a 2D Matrix 35.3% Medium
230
Kth Smallest Element in a BST 41.1% Medium
119
Pascal's Triangle II 34.4% Easy
34
Search for a Range 30.5% Medium
99
Recover Binary Search Tree 28.3% Hard
30
Substring with Concatenation of All Words 21.5% Hard
45
Jump Game II 25.9% Hard
80
Remove Duplicates from Sorted Array II 34.4% Medium
239
Sliding Window Maximum 30.6% Hard
84
Largest Rectangle in Histogram 25.3% Hard
114
Flatten Binary Tree to Linked List 33.0% Medium
109
Convert Sorted List to Binary Search Tree 32.2% Medium
86
Partition List 31.1% Medium
52
N-Queens II 42.1% Hard
87
Scramble String 27.9% Hard
18
4Sum 25.2% Medium
227
Basic Calculator II 27.5% Medium
295
Find Median from Data Stream 23.0% Hard
92
Reverse Linked List II
29.5% Medium
97
Interleaving String 23.7% Hard
269
Alien Dictionary 23.3% Hard
264
Ugly Number II 31.0% Medium
380
Insert Delete GetRandom O(1) 36.6% Hard
277
Find the Celebrity 35.5% Medium
44
Wildcard Matching 18.6% Hard
221
Maximal Square 26.3% Medium
337
House Robber III 40.7% Medium
25
Reverse Nodes in k-Group 29.3% Hard
378
Kth Smallest Element in a Sorted Matrix 42.5% Medium
144
Binary Tree Preorder Traversal 42.4% Medium
167
Two Sum II - Input array is sorted 48.1% Medium
406
Queue Reconstruction by Height 53.8% Medium
253
Meeting Rooms II 37.6% Medium
35
Search Insert Position 38.7% Medium
93
Restore IP Addresses 25.3% Medium
342
Power of Four 36.9% Easy
126
Word Ladder II 13.6% Hard
296
Best Meeting Point 49.5% Hard
32
Longest Valid Parentheses 22.9% Hard
131
Palindrome Partitioning 30.0% Medium
341
Flatten Nested List Iterator 36.8% Medium
174
Dungeon Game 22.5% Hard
212
Word Search II 21.6% Hard
61
Rotate List 23.8% Medium
300
Longest Increasing Subsequence 36.8% Medium
68
Text Justification 17.5% Hard
250
Count Univalue Subtrees
39.7% Medium
357
Count Numbers with Unique Digits 44.4% Medium
252
Meeting Rooms 44.5% Easy
111
Minimum Depth of Binary Tree 31.9% Easy
284
Peeking Iterator 34.8% Medium
95
Unique Binary Search Trees II 30.2% Medium
330
Patching Array 31.0% Hard
251
Flatten 2D Vector
37.6% Medium
209
Minimum Size Subarray Sum 28.2% Medium
281
Zigzag Iterator 46.8% Medium
94
Binary Tree Inorder Traversal 42.8% Medium
207
Course Schedule 29.7% Medium
274
H-Index 31.5% Medium
156
Binary Tree Upside Down 41.5% Medium
161
One Edit Distance 30.0% Medium
372
Super Pow 32.4% Medium
216
Combination Sum III 40.7% Medium
98
Validate Binary Search Tree 22.0% Medium
60
Permutation Sequence 26.7% Medium
332
Reconstruct Itinerary 27.3% Medium
432
All O`one Data Structure 25.6% Hard
375
Guess Number Higher or Lower II 33.7% Medium
339
Nested List Weight Sum 58.9% Easy
377
Combination Sum IV
40.9% Medium
145
Binary Tree Postorder Traversal 37.7% Hard
391
Perfect Rectangle 21.3% Hard
57
Insert Interval 25.7% Hard
106
Construct Binary Tree from Inorder and Postorder Traversal 30.6%
Medium
163
Missing Ranges 29.5% Medium
329
Longest Increasing Path in a Matrix 34.5% Hard
321
Create Maximum Number 23.3% Hard
225
Implement Stack using Queues 31.0% Easy
117
Populating Next Right Pointers in Each Node II 33.3% Hard
382
Linked List Random Node 45.7% Medium
47
Permutations II 30.3% Medium
107
Binary Tree Level Order Traversal II 36.9% Easy
285
Inorder Successor in BST
36.3% Medium
256
Paint House 45.2% Medium
390
Elimination Game 34.9% Medium
130
Surrounded Regions 17.1% Medium
82
Remove Duplicates from Sorted List II 28.3% Medium
325
Maximum Size Subarray Sum Equals k 41.5% Medium
157
Read N Characters Given Read4 29.4% Easy
243
Shortest Word Distance 49.7% Easy
291
Word Pattern II 37.0% Hard
308
Range Sum Query 2D - Mutable 20.1% Hard
304
Range Sum Query 2D - Immutable 22.7% Medium
354
Russian Doll Envelopes 31.0% Hard
132
Palindrome Partitioning II 23.1% Hard
313
Super Ugly Number 36.5% Medium
363
Max Sum of Rectangle No Larger Than K 31.2% Hard
396
Rotate Function 29.4% Easy
320
Generalized Abbreviation
42.4% Medium
113
Path Sum II 30.6% Medium
90
Subsets II 33.1% Medium
298
Binary Tree Longest Consecutive Sequence 39.0% Medium
266
Palindrome Permutation 54.0% Easy
129
Sum Root to Leaf Numbers 34.6% Medium
420
Strong Password Checker 22.9% Hard
103
Binary Tree Zigzag Level Order Traversal 31.4% Medium
346
Moving Average from Data Stream 56.5% Easy
158
Read N Characters Given Read4 II - Call multiple times
24.3% Hard
368
Largest Divisible Subset 32.3% Medium
213
House Robber II 32.6% Medium
376
Wiggle Subsequence 34.2% Medium
159
Longest Substring with At Most Two Distinct Characters 38.6%
Hard
276
Paint Fence
33.2% Easy
244
Shortest Word Distance II 34.9% Medium
373
Find K Pairs with Smallest Sums 28.9% Medium
401
Binary Watch 43.0% Easy
286
Walls and Gates
41.1% Medium
385
Mini Parser 29.1% Medium
307
Range Sum Query - Mutable 18.5% Medium
186
Reverse Words in a String II 28.8% Medium
63
Unique Paths II 30.6% Medium
394
Decode String 39.5% Medium
275
H-Index II 33.3% Medium
170
Two Sum III - Data structure design 22.6% Easy
399
Evaluate Division 37.9% Medium
271
Encode and Decode Strings
26.4% Medium
413
Arithmetic Slices 53.5% Medium
340
Longest Substring with At Most K Distinct Characters 38.9% Hard
314
Binary Tree Vertical Order Traversal 33.9% Medium
367
Valid Perfect Square 36.8% Medium
352
Data Stream as Disjoint Intervals 38.3% Hard
270
Closest Binary Search Tree Value
37.0% Easy
414
Third Maximum Number 26.4% Easy
210
Course Schedule II 24.4% Medium
249
Group Shifted Strings 36.8% Easy
259
3Sum Smaller 40.0% Medium
40
Combination Sum II 30.4% Medium
331
Verify Preorder Serialization of a Binary Tree 34.4% Medium
305
Number of Islands II 37.2% Hard
364
Nested List Weight Sum II 49.3% Medium
361
Bomb Enemy 37.6% Medium
317
Shortest Distance from All Buildings
32.5% Hard
293
Flip Game 52.9% Easy
288
Unique Word Abbreviation
15.4% Easy
248
Strobogrammatic Number III
29.7% Hard
211
Add and Search Word - Data structure design 20.1% Medium
310
Minimum Height Trees 28.1% Medium
246
Strobogrammatic Number
38.1% Easy
365
Water and Jug Problem 25.5% Medium
348
Design Tic-Tac-Toe 44.9% Medium
407
Trapping Rain Water II 34.3% Hard
381
Insert Delete GetRandom O(1) - Duplicates allowed 26.7% Hard
417
Pacific Atlantic Water Flow 31.5% Medium
418
Sentence Screen Fitting 25.4% Medium
254
Factor Combinations
39.1% Medium
362
Design Hit Counter
51.2% Medium
404
Sum of Left Leaves 45.5% Easy
392
Is Subsequence 43.7% Medium
255
Verify Preorder Sequence in Binary Search Tree
38.2% Medium
403
Frog Jump 30.2% Hard
359
Logger Rate Limiter 57.3% Easy
415
Add Strings 41.6% Easy
355
Design Twitter 23.8% Medium
272
Closest Binary Search Tree Value II
36.6% Hard
410
Split Array Largest Sum 28.8% Hard
247
Strobogrammatic Number II 37.1% Medium
400
Nth Digit 30.1% Easy
393
UTF-8 Validation 35.1% Medium
366
Find Leaves of Binary Tree
55.9% Medium
358
Rearrange String k Distance Apart
31.0% Hard
440
K-th Smallest in Lexicographical Order 18.3% Hard
405
Convert a Number to Hexadecimal 40.8% Easy
351
Android Unlock Patterns 41.3% Medium
425
Word Squares 40.3% Hard
267
Palindrome Permutation II
30.3% Medium
409
Longest Palindrome 43.9% Easy
302
Smallest Rectangle Enclosing Black Pixels 42.4% Hard
265
Paint House II
36.7% Hard
397
Integer Replacement 28.5% Medium
370
Range Addition
52.2% Medium
424
Longest Repeating Character Replacement 38.2% Medium
398
Random Pick Index 37.0% Medium
360
Sort Transformed Array
42.1% Medium
323
Number of Connected Components in an Undirected Graph 45.5%
Medium
245
Shortest Word Distance III 48.7% Medium
294
Flip Game II
44.2% Medium
261
Graph Valid Tree 35.6% Medium
437
Path Sum III 37.8% Easy
411
Minimum Unique Word Abbreviation
30.3% Hard
369
Plus One Linked List 51.7% Medium
423
Reconstruct Original Digits from English 40.6% Medium
416
Partition Equal Subset Sum 36.7% Medium
379
Design Phone Directory 27.8% Medium
438
Find All Anagrams in a String 33.3% Easy
333
Largest BST Subtree 29.1% Medium
441
Arranging Coins 37.6% Easy
402
Remove K Digits 25.5% Medium
353
Design Snake Game 24.8% Medium
436
Find Right Interval 42.3% Medium
435
Non-overlapping Intervals 37.2% Medium
356
Line Reflection 29.1% Medium
422
Valid Word Square 36.8% Easy
408
Valid Word Abbreviation 26.4% Easy
439
Ternary Expression Parser 47.0% Medium
444
Sequence Reconstruction 18.6% Medium
rows per page.
1
Two Sum 28.3% Easy
292
Nim Game 54.4% Easy
344
Reverse String 57.3% Easy
136
Single Number 52.2% Easy
2
Add Two Numbers 25.6% Medium
371
Sum of Two Integers 51.6% Easy
4
Median of Two Sorted Arrays
20.4% Hard
6
ZigZag Conversion 25.6% Easy
13
Roman to Integer 42.7% Easy
237
Delete Node in a Linked List 45.0% Easy
104
Maximum Depth of Binary Tree 50.2% Easy
191
Number of 1 Bits 38.2% Easy
155
Min Stack 25.4% Easy
151
Reverse Words in a String 15.7% Medium
206
Reverse Linked List 42.7% Easy
146
LRU Cache 15.9% Hard
3
Longest Substring Without Repeating Characters 23.4% Medium
169
Majority Element 44.1% Easy
258
Add Digits 49.9% Easy
226
Invert Binary Tree 49.0% Easy
5
Longest Palindromic Substring 24.0% Medium
283
Move Zeroes 46.9% Easy
141
Linked List Cycle 36.1% Easy
66
Plus One 36.2% Easy
70
Climbing Stairs 38.2% Easy
11
Container With Most Water 35.8% Medium
198
House Robber 36.8% Easy
148
Sort List 26.8% Medium
328
Odd Even Linked List 41.2% Medium
121
Best Time to Buy and Sell Stock 38.4% Easy
20
Valid Parentheses 31.4% Easy
238
Product of Array Except Self 46.0% Medium
12
Integer to Roman 42.1% Medium
38
Count and Say 31.8% Easy
338
Counting Bits 58.9% Medium
388
Longest Absolute File Path 33.2% Medium
202
Happy Number 38.7% Easy
42
Trapping Rain Water 34.6% Hard
217
Contains Duplicate 43.0% Easy
14
Longest Common Prefix 30.1% Easy
172
Factorial Trailing Zeroes 34.5% Easy
171
Excel Sheet Column Number 44.6% Easy
53
Maximum Subarray 38.2% Medium
7
Reverse Integer 23.7% Easy
122
Best Time to Buy and Sell Stock II 44.8% Medium
21
Merge Two Sorted Lists 37.4% Easy
160
Intersection of Two Linked Lists 30.3% Easy
9
Palindrome Number 33.6% Easy
149
Max Points on a Line 15.3% Hard
319
Bulb Switcher 41.6% Medium
326
Power of Three 38.9% Easy
139
Word Break 27.4% Medium
153
Find Minimum in Rotated Sorted Array 38.2% Medium
137
Single Number II 39.7% Medium
384
Shuffle an Array 44.6% Medium
50
Pow(x, n) 27.2% Medium
335
Self Crossing 23.2% Hard
138
Copy List with Random Pointer 26.2% Hard
150
Evaluate Reverse Polish Notation 25.4% Medium
200
Number of Islands 31.2% Medium
10
Regular Expression Matching 23.2% Hard
15
3Sum 20.4% Medium
179
Largest Number 21.0% Medium
49
Group Anagrams 30.8% Medium
242
Valid Anagram 44.2% Easy
223
Rectangle Area 31.5% Easy
235
Lowest Common Ancestor of a Binary Search Tree 37.8% Easy
233
Number of Digit One 26.8% Hard
27
Remove Element 36.3% Easy
17
Letter Combinations of a Phone Number 31.5% Medium
234
Palindrome Linked List 30.9% Easy
118
Pascal's Triangle 36.0% Easy
152
Maximum Product Subarray 23.9% Medium
23
Merge k Sorted Lists
25.3% Hard
67
Add Binary 29.8% Easy
100
Same Tree 44.8% Easy
173
Binary Search Tree Iterator 38.0% Medium
219
Contains Duplicate II 31.1% Easy
88
Merge Sorted Array 31.1% Easy
228
Summary Ranges 27.2% Medium
8
String to Integer (atoi) 13.8% Easy
387
First Unique Character in a String 44.5% Easy
22
Generate Parentheses 40.7% Medium
287
Find the Duplicate Number 41.2% Hard
412
Fizz Buzz 57.6% Easy
26
Remove Duplicates from Sorted Array 35.0% Easy
96
Unique Binary Search Trees 39.3% Medium
48
Rotate Image 36.6% Medium
85
Maximal Rectangle 25.4% Hard
72
Edit Distance 30.2% Hard
189
Rotate Array 23.0% Easy
218
The Skyline Problem 24.8% Hard
164
Maximum Gap 28.2% Hard
56
Merge Intervals 27.7% Hard
33
Search in Rotated Sorted Array 31.6% Hard
128
Longest Consecutive Sequence 34.6% Hard
268
Missing Number 42.9% Medium
54
Spiral Matrix 24.1% Medium
147
Insertion Sort List 31.3% Medium
383
Ransom Note 45.4% Easy
36
Valid Sudoku 33.2% Easy
316
Remove Duplicate Letters 27.9% Hard
46
Permutations 39.3% Medium
345
Reverse Vowels of a String 36.7% Easy
110
Balanced Binary Tree 35.8% Easy
142
Linked List Cycle II 31.2% Medium
374
Guess Number Higher or Lower 32.8% Easy
187
Repeated DNA Sequences 28.7% Medium
240
Search a 2D Matrix II 37.2% Medium
419
Battleships in a Board 59.8% Medium
188
Best Time to Buy and Sell Stock IV 23.6% Hard
273
Integer to English Words 20.6% Hard
349
Intersection of Two Arrays 45.0% Easy
220
Contains Duplicate III 19.4% Medium
336
Palindrome Pairs 23.5% Hard
263
Ugly Number 38.1% Easy
231
Power of Two 38.8% Easy
289
Game of Life 35.9% Medium
260
Single Number III 48.2% Medium
89
Gray Code 38.7% Medium
279
Perfect Squares 34.4% Medium
79
Word Search 24.8% Medium
190
Reverse Bits 29.5% Easy
28
Implement strStr() 26.5% Easy
347
Top K Frequent Elements 44.9% Medium
306
Additive Number 26.9% Medium
229
Majority Element II 27.3% Medium
162
Find Peak Element 35.2% Medium
41
First Missing Positive 24.7% Hard
204
Count Primes 25.8% Easy
69
Sqrt(x) 26.5% Medium
168
Excel Sheet Column Title 23.9% Easy
205
Isomorphic Strings 31.9% Easy
236
Lowest Common Ancestor of a Binary Tree 29.2% Medium
134
Gas Station
28.3% Medium
241
Different Ways to Add Parentheses 40.1% Medium
278
First Bad Version 23.9% Easy
115
Distinct Subsequences 30.3% Hard
120
Triangle 32.0% Medium
73
Set Matrix Zeroes 34.8% Medium
43
Multiply Strings 25.4% Medium
303
Range Sum Query - Immutable 26.0% Easy
19
Remove Nth Node From End of List 31.6% Easy
312
Burst Balloons 41.0% Hard
203
Remove Linked List Elements 30.6% Easy
165
Compare Version Numbers 18.9% Easy
350
Intersection of Two Arrays II 42.9% Easy
108
Convert Sorted Array to Binary Search Tree 39.8% Medium
116
Populating Next Right Pointers in Each Node 36.7% Medium
143
Reorder List 24.3% Medium
290
Word Pattern 31.5% Easy
125
Valid Palindrome 25.0% Easy
24
Swap Nodes in Pairs 36.8% Easy
124
Binary Tree Maximum Path Sum 24.7% Hard
297
Serialize and Deserialize Binary Tree 30.6% Hard
140
Word Break II 21.6% Hard
224
Basic Calculator 24.7% Hard
127
Word Ladder 19.3% Medium
29
Divide Two Integers 15.9% Medium
16
3Sum Closest 30.3% Medium
214
Shortest Palindrome 22.2% Hard
215
Kth Largest Element in an Array 36.5% Medium
232
Implement Queue using Stacks 34.8% Easy
282
Expression Add Operators 27.6% Hard
154
Find Minimum in Rotated Sorted Array II 35.8% Hard
299
Bulls and Cows 32.6% Easy
334
Increasing Triplet Subsequence 37.1% Medium
62
Unique Paths 38.5% Medium
101
Symmetric Tree 36.3% Easy
59
Spiral Matrix II 37.4% Medium
166
Fraction to Recurring Decimal 16.5% Medium
31
Next Permutation 27.9% Medium
315
Count of Smaller Numbers After Self 33.0% Hard
280
Wiggle Sort
53.7% Medium
65
Valid Number 12.5% Hard
64
Minimum Path Sum 36.8% Medium
83
Remove Duplicates from Sorted List 38.4% Easy
76
Minimum Window Substring 23.1% Hard
386
Lexicographical Numbers 37.5% Medium
318
Maximum Product of Word Lengths 41.5% Medium
55
Jump Game 29.0% Medium
324
Wiggle Sort II 24.6% Medium
102
Binary Tree Level Order Traversal 36.0% Easy
135
Candy 23.7% Hard
123
Best Time to Buy and Sell Stock III 27.8% Hard
322
Coin Change 25.8% Medium
75
Sort Colors 36.3% Medium
222
Count Complete Tree Nodes 26.7% Medium
112
Path Sum 32.5% Easy
39
Combination Sum 34.7% Medium
58
Length of Last Word 30.7% Easy
421
Maximum XOR of Two Numbers in an Array 35.4% Medium
311
Sparse Matrix Multiplication 49.5% Medium
327
Count of Range Sum 28.1% Hard
389
Find the Difference 49.9% Easy
343
Integer Break 44.3% Medium
78
Subsets 35.4% Medium
395
Longest Substring with At Least K Repeating Characters 34.5%
Medium
309
Best Time to Buy and Sell Stock with Cooldown 39.2% Medium
133
Clone Graph 24.9% Medium
257
Binary Tree Paths 33.4% Easy
91
Decode Ways 18.5% Medium
301
Remove Invalid Parentheses 34.2% Hard
77
Combinations 37.1% Medium
105
Construct Binary Tree from Preorder and Inorder Traversal 30.3%
Medium
81
Search in Rotated Sorted Array II 32.7% Medium
37
Sudoku Solver 27.3% Hard
208
Implement Trie (Prefix Tree) 25.6% Medium
201
Bitwise AND of Numbers Range 32.7% Medium
51
N-Queens 28.3% Hard
199
Binary Tree Right Side View 37.9% Medium
71
Simplify Path 23.5% Medium
74
Search a 2D Matrix 35.3% Medium
230
Kth Smallest Element in a BST 41.1% Medium
119
Pascal's Triangle II 34.4% Easy
34
Search for a Range 30.5% Medium
99
Recover Binary Search Tree 28.3% Hard
30
Substring with Concatenation of All Words 21.5% Hard
45
Jump Game II 25.9% Hard
80
Remove Duplicates from Sorted Array II 34.4% Medium
239
Sliding Window Maximum 30.6% Hard
84
Largest Rectangle in Histogram 25.3% Hard
114
Flatten Binary Tree to Linked List 33.0% Medium
109
Convert Sorted List to Binary Search Tree 32.2% Medium
86
Partition List 31.1% Medium
52
N-Queens II 42.1% Hard
87
Scramble String 27.9% Hard
18
4Sum 25.2% Medium
227
Basic Calculator II 27.5% Medium
295
Find Median from Data Stream 23.0% Hard
92
Reverse Linked List II
29.5% Medium
97
Interleaving String 23.7% Hard
269
Alien Dictionary 23.3% Hard
264
Ugly Number II 31.0% Medium
380
Insert Delete GetRandom O(1) 36.6% Hard
277
Find the Celebrity 35.5% Medium
44
Wildcard Matching 18.6% Hard
221
Maximal Square 26.3% Medium
337
House Robber III 40.7% Medium
25
Reverse Nodes in k-Group 29.3% Hard
378
Kth Smallest Element in a Sorted Matrix 42.5% Medium
144
Binary Tree Preorder Traversal 42.4% Medium
167
Two Sum II - Input array is sorted 48.1% Medium
406
Queue Reconstruction by Height 53.8% Medium
253
Meeting Rooms II 37.6% Medium
35
Search Insert Position 38.7% Medium
93
Restore IP Addresses 25.3% Medium
342
Power of Four 36.9% Easy
126
Word Ladder II 13.6% Hard
296
Best Meeting Point 49.5% Hard
32
Longest Valid Parentheses 22.9% Hard
131
Palindrome Partitioning 30.0% Medium
341
Flatten Nested List Iterator 36.8% Medium
174
Dungeon Game 22.5% Hard
212
Word Search II 21.6% Hard
61
Rotate List 23.8% Medium
300
Longest Increasing Subsequence 36.8% Medium
68
Text Justification 17.5% Hard
250
Count Univalue Subtrees
39.7% Medium
357
Count Numbers with Unique Digits 44.4% Medium
252
Meeting Rooms 44.5% Easy
111
Minimum Depth of Binary Tree 31.9% Easy
284
Peeking Iterator 34.8% Medium
95
Unique Binary Search Trees II 30.2% Medium
330
Patching Array 31.0% Hard
251
Flatten 2D Vector
37.6% Medium
209
Minimum Size Subarray Sum 28.2% Medium
281
Zigzag Iterator 46.8% Medium
94
Binary Tree Inorder Traversal 42.8% Medium
207
Course Schedule 29.7% Medium
274
H-Index 31.5% Medium
156
Binary Tree Upside Down 41.5% Medium
161
One Edit Distance 30.0% Medium
372
Super Pow 32.4% Medium
216
Combination Sum III 40.7% Medium
98
Validate Binary Search Tree 22.0% Medium
60
Permutation Sequence 26.7% Medium
332
Reconstruct Itinerary 27.3% Medium
432
All O`one Data Structure 25.6% Hard
375
Guess Number Higher or Lower II 33.7% Medium
339
Nested List Weight Sum 58.9% Easy
377
Combination Sum IV
40.9% Medium
145
Binary Tree Postorder Traversal 37.7% Hard
391
Perfect Rectangle 21.3% Hard
57
Insert Interval 25.7% Hard
106
Construct Binary Tree from Inorder and Postorder Traversal 30.6%
Medium
163
Missing Ranges 29.5% Medium
329
Longest Increasing Path in a Matrix 34.5% Hard
321
Create Maximum Number 23.3% Hard
225
Implement Stack using Queues 31.0% Easy
117
Populating Next Right Pointers in Each Node II 33.3% Hard
382
Linked List Random Node 45.7% Medium
47
Permutations II 30.3% Medium
107
Binary Tree Level Order Traversal II 36.9% Easy
285
Inorder Successor in BST
36.3% Medium
256
Paint House 45.2% Medium
390
Elimination Game 34.9% Medium
130
Surrounded Regions 17.1% Medium
82
Remove Duplicates from Sorted List II 28.3% Medium
325
Maximum Size Subarray Sum Equals k 41.5% Medium
157
Read N Characters Given Read4 29.4% Easy
243
Shortest Word Distance 49.7% Easy
291
Word Pattern II 37.0% Hard
308
Range Sum Query 2D - Mutable 20.1% Hard
304
Range Sum Query 2D - Immutable 22.7% Medium
354
Russian Doll Envelopes 31.0% Hard
132
Palindrome Partitioning II 23.1% Hard
313
Super Ugly Number 36.5% Medium
363
Max Sum of Rectangle No Larger Than K 31.2% Hard
396
Rotate Function 29.4% Easy
320
Generalized Abbreviation
42.4% Medium
113
Path Sum II 30.6% Medium
90
Subsets II 33.1% Medium
298
Binary Tree Longest Consecutive Sequence 39.0% Medium
266
Palindrome Permutation 54.0% Easy
129
Sum Root to Leaf Numbers 34.6% Medium
420
Strong Password Checker 22.9% Hard
103
Binary Tree Zigzag Level Order Traversal 31.4% Medium
346
Moving Average from Data Stream 56.5% Easy
158
Read N Characters Given Read4 II - Call multiple times
24.3% Hard
368
Largest Divisible Subset 32.3% Medium
213
House Robber II 32.6% Medium
376
Wiggle Subsequence 34.2% Medium
159
Longest Substring with At Most Two Distinct Characters 38.6%
Hard
276
Paint Fence
33.2% Easy
244
Shortest Word Distance II 34.9% Medium
373
Find K Pairs with Smallest Sums 28.9% Medium
401
Binary Watch 43.0% Easy
286
Walls and Gates
41.1% Medium
385
Mini Parser 29.1% Medium
307
Range Sum Query - Mutable 18.5% Medium
186
Reverse Words in a String II 28.8% Medium
63
Unique Paths II 30.6% Medium
394
Decode String 39.5% Medium
275
H-Index II 33.3% Medium
170
Two Sum III - Data structure design 22.6% Easy
399
Evaluate Division 37.9% Medium
271
Encode and Decode Strings
26.4% Medium
413
Arithmetic Slices 53.5% Medium
340
Longest Substring with At Most K Distinct Characters 38.9% Hard
314
Binary Tree Vertical Order Traversal 33.9% Medium
367
Valid Perfect Square 36.8% Medium
352
Data Stream as Disjoint Intervals 38.3% Hard
270
Closest Binary Search Tree Value
37.0% Easy
414
Third Maximum Number 26.4% Easy
210
Course Schedule II 24.4% Medium
249
Group Shifted Strings 36.8% Easy
259
3Sum Smaller 40.0% Medium
40
Combination Sum II 30.4% Medium
331
Verify Preorder Serialization of a Binary Tree 34.4% Medium
305
Number of Islands II 37.2% Hard
364
Nested List Weight Sum II 49.3% Medium
361
Bomb Enemy 37.6% Medium
317
Shortest Distance from All Buildings
32.5% Hard
293
Flip Game 52.9% Easy
288
Unique Word Abbreviation
15.4% Easy
248
Strobogrammatic Number III
29.7% Hard
211
Add and Search Word - Data structure design 20.1% Medium
310
Minimum Height Trees 28.1% Medium
246
Strobogrammatic Number
38.1% Easy
365
Water and Jug Problem 25.5% Medium
348
Design Tic-Tac-Toe 44.9% Medium
407
Trapping Rain Water II 34.3% Hard
381
Insert Delete GetRandom O(1) - Duplicates allowed 26.7% Hard
417
Pacific Atlantic Water Flow 31.5% Medium
418
Sentence Screen Fitting 25.4% Medium
254
Factor Combinations
39.1% Medium
362
Design Hit Counter
51.2% Medium
404
Sum of Left Leaves 45.5% Easy
392
Is Subsequence 43.7% Medium
255
Verify Preorder Sequence in Binary Search Tree
38.2% Medium
403
Frog Jump 30.2% Hard
359
Logger Rate Limiter 57.3% Easy
415
Add Strings 41.6% Easy
355
Design Twitter 23.8% Medium
272
Closest Binary Search Tree Value II
36.6% Hard
410
Split Array Largest Sum 28.8% Hard
247
Strobogrammatic Number II 37.1% Medium
400
Nth Digit 30.1% Easy
393
UTF-8 Validation 35.1% Medium
366
Find Leaves of Binary Tree
55.9% Medium
358
Rearrange String k Distance Apart
31.0% Hard
440
K-th Smallest in Lexicographical Order 18.3% Hard
405
Convert a Number to Hexadecimal 40.8% Easy
351
Android Unlock Patterns 41.3% Medium
425
Word Squares 40.3% Hard
267
Palindrome Permutation II
30.3% Medium
409
Longest Palindrome 43.9% Easy
302
Smallest Rectangle Enclosing Black Pixels 42.4% Hard
265
Paint House II
36.7% Hard
397
Integer Replacement 28.5% Medium
370
Range Addition
52.2% Medium
424
Longest Repeating Character Replacement 38.2% Medium
398
Random Pick Index 37.0% Medium
360
Sort Transformed Array
42.1% Medium
323
Number of Connected Components in an Undirected Graph 45.5%
Medium
245
Shortest Word Distance III 48.7% Medium
294
Flip Game II
44.2% Medium
261
Graph Valid Tree 35.6% Medium
437
Path Sum III 37.8% Easy
411
Minimum Unique Word Abbreviation
30.3% Hard
369
Plus One Linked List 51.7% Medium
423
Reconstruct Original Digits from English 40.6% Medium
416
Partition Equal Subset Sum 36.7% Medium
379
Design Phone Directory 27.8% Medium
438
Find All Anagrams in a String 33.3% Easy
333
Largest BST Subtree 29.1% Medium
441
Arranging Coins 37.6% Easy
402
Remove K Digits 25.5% Medium
353
Design Snake Game 24.8% Medium
436
Find Right Interval 42.3% Medium
435
Non-overlapping Intervals 37.2% Medium
356
Line Reflection 29.1% Medium
422
Valid Word Square 36.8% Easy
408
Valid Word Abbreviation 26.4% Easy
439
Ternary Expression Parser 47.0% Medium
444
Sequence Reconstruction 18.6% Medium
rows per page.
n*s
11 楼
谢谢，只有难度，没有频率啊
【在 o*q 的大作中提到】
: # Title Editorial Acceptance Difficulty Frequency
: 1
: Two Sum 28.3% Easy
: 292
: Nim Game 54.4% Easy
: 344
: Reverse String 57.3% Easy
: 136
: Single Number 52.2% Easy
: 2
【在 o*q 的大作中提到】
: # Title Editorial Acceptance Difficulty Frequency
: 1
: Two Sum 28.3% Easy
: 292
: Nim Game 54.4% Easy
: 344
: Reverse String 57.3% Easy
: 136
: Single Number 52.2% Easy
: 2
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