001 |
Two Sum |
Easy |
Java |
Python |
|
C++ |
002 |
Add Two Numbers |
Medium |
Java |
Python |
|
C++ |
003 |
Longest Substring Without Repeating Characters |
Medium |
Java |
Python |
|
C++ |
004 |
Median of Two Sorted Arrays |
Hard |
no |
no |
|
no |
005 |
Longest Palindromic Substring |
Medium |
no |
no |
|
C++ |
006 |
ZigZag Conversion |
Easy |
Java |
Python |
|
C++ |
007 |
Reverse Integer |
Easy |
Java |
Python |
|
C++ |
008 |
String to Integer (atoi) |
Easy |
Java |
no |
|
C++ |
009 |
Palindrome Number |
Easy |
Java |
Python |
|
C++ |
010 |
Regular Expression Matching |
Hard |
Java |
no |
|
no |
011 |
Container With Most Water |
Medium |
Java |
no |
no |
C++ |
012 |
Integer to Roman |
Medium |
Java |
Python |
no |
C++ |
013 |
Roman to Integer |
Easy |
Java |
Python |
no |
C++ |
014 |
Longest Common Prefix |
Easy |
Java |
Python |
no |
C++ |
015 |
3Sum |
Medium |
Java |
Python |
Ruby |
C++ |
016 |
3Sum Closest |
Medium |
Java |
no |
no |
C++ |
017 |
Letter Combinations of a Phone Number |
Medium |
Java |
Python |
no |
C++ |
018 |
4Sum |
Medium |
Java |
no |
no |
C++ |
019 |
Remove Nth Node From End of List |
Easy |
Java |
Python |
Ruby |
C++ |
020 |
Valid Parentheses |
Easy |
Java |
no |
no |
C++ |
021 |
Merge Two Sorted Lists |
Easy |
Java |
Python |
Ruby |
C++ |
022 |
Generate Parentheses |
Medium |
Java |
Python |
no |
C++ |
023 |
Merge k Sorted Lists |
Hard |
Java |
Python |
Ruby |
no |
024 |
Swap Nodes in Pairs |
Easy |
Java |
Python |
no |
C++ |
025 |
Reverse Nodes in k-Group |
Hard |
Java |
no |
no |
no |
026 |
Remove Duplicates from Sorted Array |
Easy |
Java |
Python |
no |
C++ |
027 |
Remove Element |
Easy |
Java |
Python |
no |
C++ |
028 |
Implement strStr() |
Easy |
Java |
no |
no |
C++ |
029 |
Divide Two Integers |
Medium |
Java |
no |
no |
C++ |
030 |
Substring with Concatenation of All Words |
Hard |
no |
no |
no |
no |
031 |
Next Permutation |
Medium |
Java |
Python |
no |
C++ |
032 |
Longest Valid Parentheses |
Hard |
Java |
no |
no |
no |
033 |
Search in Rotated Sorted Array |
Hard |
Java |
no |
no |
no |
034 |
Search for a Range |
Medium |
Java |
Python |
no |
C++ |
035 |
Search Insert Position |
Medium |
Java |
Python |
no |
C++ |
036 |
Valid Sudoku |
Easy |
Java |
no |
no |
C++ |
037 |
Sudoku Solver |
Hard |
Java |
no |
no |
no |
038 |
Count and Say |
Easy |
Java |
no |
no |
C++ |
039 |
Combination Sum |
Medium |
Java |
Python |
no |
C++ |
040 |
Combination Sum II |
Medium |
Java |
no |
no |
C++ |
041 |
First Missing Positive |
Hard |
Java |
Python |
no |
no |
042 |
Trapping Rain Water |
Hard |
Java |
no |
no |
C++ |
043 |
Multiply Strings |
Medium |
Java |
Python |
no |
no |
044 |
Wildcard Matching |
Hard |
no |
no |
no |
no |
045 |
Jump Game II |
Hard |
Java |
no |
no |
no |
046 |
Permutations |
Medium |
Java |
Python |
no |
C++ |
047 |
Permutations II |
Medium |
Java |
Python |
no |
C++ |
048 |
Rotate Image |
Medium |
Java |
Python |
no |
C++ |
049 |
Group Anagrams |
Medium |
Java |
Python |
no |
no |
050 |
Pow(x, n) |
Medium |
Java |
Python |
no |
no |
051 |
N-Queens |
Hard |
Java |
Python |
no |
C++ |
052 |
N-Queens II |
Hard |
Java |
Python |
no |
C++ |
053 |
Maximum Subarray |
Medium |
Java |
Python |
no |
C++ |
054 |
Spiral Matrix |
Medium |
Java |
Python |
no |
no |
055 |
Jump Game |
Medium |
Java |
Python |
no |
C++ |
056 |
Merge Intervals |
Hard |
Java |
no |
no |
no |
057 |
Insert Interval |
Hard |
Java |
Python |
no |
no |
058 |
Length of Last Word |
Easy |
Java |
Python |
no |
C++ |
059 |
Spiral Matrix II |
Medium |
Java |
Python |
no |
C++ |
060 |
Permutation Sequence |
Medium |
Java |
Python |
no |
C++ |
061 |
Rotate List |
Medium |
Java |
Python |
no |
C++ |
062 |
Unique Paths |
Medium |
Java |
Python |
no |
C++ |
063 |
Unique Paths II |
Medium |
Java |
Python |
no |
C++ |
064 |
Minimum Path Sum |
Medium |
Java |
Python |
no |
C++ |
065 |
Valid Number |
Hard |
no |
no |
no |
no |
066 |
Plus One |
Easy |
Java |
no |
no |
C++ |
067 |
Add Binary |
Easy |
Java |
Python |
no |
C++ |
068 |
Text Justification |
Hard |
Java |
Python |
no |
no |
069 |
Sqrt(x) |
Medium |
Java |
Python |
no |
C++ |
070 |
Climbing Stairs |
Easy |
Java |
Python |
no |
C++ |
071 |
Simplify Path |
Medium |
no |
no |
no |
C++ |
072 |
Edit Distance |
Hard |
Java |
Python |
no |
no |
073 |
Set Matrix Zeroes |
Medium |
Java |
Python |
no |
no |
074 |
Search a 2D Matrix |
Medium |
Java |
Python |
no |
no |
075 |
Sort Colors |
Medium |
Java |
Python |
no |
C++ |
076 |
Minimum Window Substring |
Hard |
no |
no |
no |
no |
077 |
Combinations |
Medium |
Java |
Python |
no |
C++ |
078 |
Subsets |
Medium |
Java |
Python |
no |
C++ |
079 |
Word Search |
Medium |
Java |
no |
no |
no |
080 |
Remove Duplicates from Sorted Array II |
Medium |
Java |
Python |
no |
C++ |
081 |
Search in Rotated Sorted Array II |
Medium |
Java |
no |
no |
no |
082 |
Remove Duplicates from Sorted List II |
Medium |
Java |
Python |
no |
C++ |
083 |
Remove Duplicates from Sorted List |
Easy |
Java |
Python |
no |
C++ |
084 |
Largest Rectangle in Histogram |
Hard |
no |
no |
no |
no |
085 |
Maximal Rectangle |
Hard |
no |
no |
no |
no |
086 |
Partition List |
Medium |
Java |
Python |
no |
no |
087 |
Scramble String |
Hard |
Java |
Python |
no |
no |
088 |
Merge Sorted Array |
Easy |
Java |
Python |
no |
C++ |
089 |
Gray Code |
Medium |
Java |
Python |
no |
no |
090 |
Subsets II |
Medium |
Java |
Python |
no |
C++ |
091 |
Decode Ways |
Medium |
Java |
Python |
no |
C++ |
092 |
Reverse Linked List II |
Medium |
Java |
no |
no |
no |
093 |
Restore IP Addresses |
Medium |
Java |
Python |
no |
C++ |
094 |
Binary Tree Inorder Traversal |
Medium |
Java |
Python |
Ruby |
C++ |
095 |
Unique Binary Search Trees II |
Medium |
Java |
no |
no |
no |
096 |
Unique Binary Search Trees |
Medium |
Java |
Python |
no |
C++ |
097 |
Interleaving String |
Hard |
Java |
Python |
no |
no |
098 |
Validate Binary Search Tree |
Medium |
Java |
Python |
Ruby |
C++ |
099 |
Recover Binary Search Tree |
Hard |
no |
Python |
no |
no |
100 |
Same Tree |
Easy |
Java |
Python |
Ruby |
C++ |
101 |
Symmetric Tree |
Easy |
Java |
Python |
Ruby |
C++ |
102 |
Binary Tree Level Order Traversal |
Easy |
Java |
Python |
no |
C++ |
103 |
Binary Tree Zigzag Level Order Traversal |
Medium |
Java |
Python |
no |
C++ |
104 |
Maximum Depth of Binary Tree |
Easy |
Java |
Python |
Ruby |
C++ |
105 |
Construct Binary Tree from Preorder and Inorder Traversal |
Medium |
Java |
Python |
Ruby |
no |
106 |
Construct Binary Tree from Inorder and Postorder Traversal |
Medium |
Java |
Python |
Ruby |
no |
107 |
Binary Tree Level Order Traversal II |
Easy |
Java |
Python |
no |
C++ |
108 |
Convert Sorted Array to Binary Search Tree |
Medium |
Java |
Python |
no |
C++ |
109 |
Convert Sorted List to Binary Search Tree |
Medium |
Java |
Python |
no |
C++ |
110 |
Balanced Binary Tree |
Easy |
Java |
Python |
Ruby |
C++ |
111 |
Minimum Depth of Binary Tree |
Easy |
Java |
Python |
Ruby |
C++ |
112 |
Path Sum |
Easy |
Java |
Python |
Ruby |
C++ |
113 |
Path Sum II |
Medium |
Java |
Python |
no |
C++ |
114 |
Flatten Binary Tree to Linked List |
Medium |
Java |
Python |
no |
no |
115 |
Distinct Subsequences |
Hard |
no |
no |
no |
no |
116 |
Populating Next Right Pointers in Each Node |
Medium |
Java |
Python |
no |
no |
117 |
Populating Next Right Pointers in Each Node II |
Hard |
Java |
Python |
no |
no |
118 |
Pascal's Triangle |
Easy |
Java |
Python |
no |
C++ |
119 |
Pascal's Triangle II |
Easy |
Java |
Python |
no |
C++ |
120 |
Triangle |
Medium |
Java |
Python |
no |
C++ |
121 |
Best Time to Buy and Sell Stock |
Easy |
Java |
no |
no |
C++ |
122 |
Best Time to Buy and Sell Stock II |
Medium |
Java |
no |
no |
C++ |
123 |
Best Time to Buy and Sell Stock III |
Hard |
Java |
no |
no |
no |
124 |
Binary Tree Maximum Path Sum |
Hard |
Java |
no |
no |
no |
125 |
Valid Palindrome |
Easy |
Java |
no |
no |
C++ |
126 |
Word Ladder II |
Hard |
no |
no |
no |
no |
127 |
Word Ladder |
Medium |
Java |
no |
no |
C++ |
128 |
Longest Consecutive Sequence |
Hard |
Java |
no |
no |
no |
129 |
Sum Root to Leaf Numbers |
Medium |
Java |
Python |
no |
C++ |
130 |
Surrounded Regions |
Medium |
Java |
no |
no |
C++ |
131 |
Palindrome Partitioning |
Medium |
Java |
no |
no |
no |
132 |
Palindrome Partitioning II |
Hard |
no |
no |
no |
no |
133 |
Clone Graph |
Medium |
Java |
Python |
no |
no |
134 |
Gas Station |
Medium |
Java |
Python |
no |
C++ |
135 |
Candy |
Hard |
Java |
no |
no |
no |
136 |
Single Number |
Easy |
Java |
Python |
no |
C++ |
137 |
Single Number II |
Medium |
Java |
no |
no |
C++ |
138 |
Copy List with Random Pointer |
Hard |
Java |
Python |
no |
no |
139 |
Word Break |
Medium |
Java |
no |
no |
no |
140 |
Word Break II |
Hard |
Java |
no |
no |
no |
141 |
Linked List Cycle |
Easy |
Java |
Python |
no |
C++ |
142 |
Linked List Cycle II |
Medium |
Java |
Python |
no |
C++ |
143 |
Reorder List |
Medium |
Java |
Python |
no |
C++ |
144 |
Binary Tree Preorder Traversal |
Medium |
Java |
Python |
Ruby |
C++ |
145 |
Binary Tree Postorder Traversal |
Hard |
Java |
Python |
no |
C++ |
146 |
LRU Cache |
Hard |
Java |
Python |
no |
no |
147 |
Insertion Sort List |
Medium |
Java |
no |
no |
no |
148 |
Sort List |
Medium |
Java |
Python |
no |
no |
149 |
Max Points on a Line |
Hard |
Java |
no |
no |
no |
150 |
Evaluate Reverse Polish Notation |
Medium |
Java |
no |
no |
no |
151 |
Reverse Words in a String |
Medium |
Java |
no |
no |
C++ |
152 |
Maximum Product Subarray |
Medium |
Java |
no |
no |
C++ |
153 |
Find Minimum in Rotated Sorted Array |
Medium |
Java |
no |
no |
C++ |
154 |
Find Minimum in Rotated Sorted Array II |
Hard |
Java |
no |
no |
no |
155 |
Min Stack |
Easy |
Java |
no |
no |
C++ |
156 |
Binary Tree Upside Down |
Medium |
Java |
no |
no |
no |
157 |
Read N Characters Given Read4 |
Easy |
no |
no |
no |
no |
158 |
Read N Characters Given Read4 II - Call multiple times |
Hard |
no |
no |
no |
no |
159 |
Longest Substring with At Most Two Distinct Characters |
Hard |
no |
no |
no |
no |
160 |
Intersection of Two Linked Lists |
Easy |
Java |
Python |
no |
C++ |
161 |
One Edit Distance |
Medium |
Java |
no |
no |
no |
162 |
Find Peak Element |
Medium |
Java |
no |
no |
C++ |
163 |
Missing Ranges |
Medium |
no |
no |
no |
no |
164 |
Maximum Gap |
Hard |
Java |
no |
no |
no |
165 |
Compare Version Numbers |
Easy |
Java |
Python |
no |
C++ |
166 |
Fraction to Recurring Decimal |
Medium |
Java |
no |
no |
C++ |
167 |
Two Sum II - Input array is sorted |
Medium |
Java |
no |
no |
C++ |
168 |
Excel Sheet Column Title |
Easy |
Java |
Python |
no |
C++ |
169 |
Majority Element |
Easy |
Java |
Python |
no |
C++ |
170 |
Two Sum III - Data structure design |
Easy |
no |
no |
no |
no |
171 |
Excel Sheet Column Number |
Easy |
Java |
Python |
no |
C++ |
172 |
Factorial Trailing Zeroes |
Easy |
Java |
Python |
no |
C++ |
173 |
Binary Search Tree Iterator |
Medium |
Java |
no |
no |
no |
174 |
Dungeon Game |
Hard |
no |
no |
no |
no |
179 |
Largest Number |
Medium |
Java |
Python |
no |
C++ |
186 |
Reverse Words in a String II |
Medium |
no |
no |
no |
no |
187 |
Repeated DNA Sequences |
Medium |
Java |
no |
no |
no |
188 |
Best Time to Buy and Sell Stock IV |
Hard |
no |
no |
no |
no |
189 |
Rotate Array |
Easy |
Java |
Python |
no |
C++ |
190 |
Reverse Bits |
Easy |
Java |
Python |
no |
C++ |
191 |
Number of 1 Bits |
Easy |
Java |
Python |
no |
C++ |
198 |
House Robber |
Easy |
Java |
Python |
no |
C++ |
199 |
Binary Tree Right Side View |
Medium |
Java |
Python |
no |
C++ |
200 |
Number of Islands |
Medium |
Java |
Python |
no |
no |
201 |
Bitwise AND of Numbers Range |
Medium |
Java |
no |
no |
no |
202 |
Happy Number |
Easy |
Java |
Python |
no |
C++ |
203 |
Remove Linked List Elements |
Easy |
Java |
Python |
no |
C++ |
204 |
Count Primes |
Easy |
Java |
no |
no |
C++ |
205 |
Isomorphic Strings |
Easy |
Java |
Python |
no |
C++ |
206 |
Reverse Linked List |
Easy |
Java |
Python |
no |
C++ |
207 |
Course Schedule |
Medium |
no |
no |
no |
no |
208 |
Implement Trie (Prefix Tree) |
Medium |
Java |
no |
no |
no |
209 |
Minimum Size Subarray Sum |
Medium |
no |
no |
no |
C++ |
210 |
Course Schedule II |
Medium |
no |
no |
no |
no |
211 |
Add and Search Word - Data structure design |
Medium |
no |
no |
no |
no |
212 |
Word Search II |
Hard |
Java |
no |
no |
no |
213 |
House Robber II |
Medium |
Java |
Python |
no |
C++ |
214 |
Shortest Palindrome |
Hard |
no |
no |
no |
no |
215 |
Kth Largest Element in an Array |
Medium |
Java |
Python |
no |
C++ |
216 |
Combination Sum III |
Medium |
Java |
Python |
no |
C++ |
217 |
Contains Duplicate |
Easy |
Java |
Python |
no |
C++ |
218 |
The Skyline Problem |
Hard |
no |
no |
no |
no |
219 |
Contains Duplicate II |
Easy |
Java |
Python |
no |
C++ |
220 |
Contains Duplicate III |
Medium |
no |
no |
no |
C++ |
221 |
Maximal Square |
Medium |
Java |
no |
no |
no |
222 |
Count Complete Tree Nodes |
Medium |
Java |
Python |
no |
C++ |
223 |
Rectangle Area |
Easy |
Java |
Python |
no |
C++ |
224 |
Basic Calculator |
Hard |
no |
no |
no |
no |
225 |
Implement Stack using Queues |
Easy |
Java |
no |
no |
C++ |
226 |
Invert Binary Tree |
Easy |
Java |
Python |
Ruby |
C++ |
227 |
Basic Calculator II |
Medium |
no |
no |
no |
no |
228 |
Summary Ranges |
Medium |
Java |
Python |
no |
C++ |
229 |
Majority Element II |
Medium |
Java |
no |
no |
no |
230 |
Kth Smallest Element in a BST |
Medium |
Java |
Python |
Ruby |
C++ |
231 |
Power of Two |
Easy |
Java |
Python |
no |
C++ |
232 |
Implement Queue using Stacks |
Easy |
Java |
no |
no |
C++ |
233 |
Number of Digit One |
Hard |
no |
no |
no |
no |
234 |
Palindrome Linked List |
Easy |
Java |
no |
no |
C++ |
235 |
Lowest Common Ancestor of a Binary Search Tree |
Easy |
Java |
Python |
no |
C++ |
236 |
Lowest Common Ancestor of a Binary Tree |
Medium |
Java |
Python |
no |
no |
237 |
Delete Node in a Linked List |
Easy |
Java |
Python |
no |
C++ |
238 |
Product of Array Except Self |
Medium |
Java |
Python |
no |
C++ |
239 |
Sliding Window Maximum |
Hard |
Java |
Python |
no |
no |
240 |
Search a 2D Matrix II |
Medium |
Java |
no |
no |
no |
241 |
Different Ways to Add Parentheses |
Medium |
no |
no |
no |
no |
242 |
Valid Anagram |
Easy |
Java |
Python |
no |
C++ |
243 |
Shortest Word Distance |
Easy |
no |
no |
no |
no |
244 |
Shortest Word Distance II |
Medium |
no |
no |
no |
no |
245 |
Shortest Word Distance III |
Medium |
no |
no |
no |
no |
246 |
Strobogrammatic Number |
Easy |
no |
no |
no |
no |
247 |
Strobogrammatic Number II |
Medium |
no |
no |
no |
no |
248 |
Strobogrammatic Number III |
Hard |
no |
no |
no |
no |
249 |
Group Shifted Strings |
Easy |
no |
no |
no |
no |
250 |
Count Univalue Subtrees |
Medium |
no |
no |
no |
no |
251 |
Flatten 2D Vector |
Medium |
no |
no |
no |
no |
252 |
Meeting Rooms |
Easy |
no |
no |
no |
no |
253 |
Meeting Rooms II |
Medium |
no |
no |
no |
no |
254 |
Factor Combinations |
Medium |
no |
no |
no |
no |
255 |
Verify Preorder Sequence in Binary Search Tree |
Medium |
no |
no |
no |
no |
256 |
Paint House |
Medium |
no |
no |
no |
no |
257 |
Binary Tree Paths |
Easy |
Java |
Python |
no |
no |
258 |
Add Digits |
Easy |
Java |
Python |
no |
C++ |
259 |
3Sum Smaller |
Medium |
no |
no |
no |
no |
260 |
Single Number III |
Medium |
Java |
Python |
no |
C++ |
261 |
Graph Valid Tree |
Medium |
no |
no |
no |
no |
263 |
Ugly Number |
Easy |
Java |
Python |
no |
C++ |
264 |
Ugly Number II |
Medium |
Java |
no |
no |
no |
265 |
Paint House II |
Hard |
no |
no |
no |
no |
266 |
Palindrome Permutation |
Easy |
no |
no |
no |
no |
267 |
Palindrome Permutation II |
Medium |
no |
no |
no |
no |
268 |
Missing Number |
Medium |
Java |
Python |
no |
C++ |
269 |
Alien Dictionary |
Hard |
no |
no |
no |
no |
270 |
Closest Binary Search Tree Value |
Easy |
no |
no |
no |
no |
271 |
Encode and Decode Strings |
Medium |
no |
no |
no |
no |
272 |
Closest Binary Search Tree Value II |
Hard |
no |
no |
no |
no |
273 |
Integer to English Words |
Hard |
Java |
Python |
no |
no |
274 |
H-Index |
Medium |
Java |
no |
no |
no |
275 |
H-Index II |
Medium |
Java |
no |
no |
no |
276 |
Paint Fence |
Easy |
no |
no |
no |
no |
277 |
Find the Celebrity |
Medium |
no |
no |
no |
no |
278 |
First Bad Version |
Easy |
Java |
Python |
no |
C++ |
279 |
Perfect Squares |
Medium |
Java |
no |
no |
C++ |
280 |
Wiggle Sort |
Medium |
no |
no |
no |
no |
281 |
Zigzag Iterator |
Medium |
no |
no |
no |
no |
282 |
Expression Add Operators |
Hard |
no |
no |
no |
no |
283 |
Move Zeroes |
Easy |
Java |
Python |
no |
C++ |
284 |
Peeking Iterator |
Medium |
Java |
no |
no |
no |
285 |
Inorder Successor in BST |
Medium |
no |
no |
no |
no |
286 |
Walls and Gates |
Medium |
no |
no |
no |
no |
287 |
Find the Duplicate Number |
Hard |
Java |
Python |
no |
no |
288 |
Unique Word Abbreviation |
Easy |
no |
no |
no |
no |
289 |
Game of Life |
Medium |
Java |
Python |
no |
no |
290 |
Word Pattern |
Easy |
Java |
Python |
no |
C++ |
291 |
Word Pattern II |
Hard |
no |
no |
no |
no |
292 |
Nim Game |
Easy |
Java |
Python |
no |
C++ |
293 |
Flip Game |
Easy |
no |
no |
no |
no |
294 |
Flip Game II |
Medium |
no |
no |
no |
no |
295 |
Find Median from Data Stream |
Hard |
Java |
no |
no |
no |
296 |
Best Meeting Point |
Hard |
no |
no |
no |
no |
297 |
Serialize and Deserialize Binary Tree |
Hard |
Java |
no |
no |
no |
298 |
Binary Tree Longest Consecutive Sequence |
Medium |
no |
no |
no |
no |
299 |
Bulls and Cows |
Easy |
Java |
Python |
no |
C++ |
300 |
Longest Increasing Subsequence |
Medium |
Java |
no |
no |
C++ |
301 |
Remove Invalid Parentheses |
Hard |
no |
no |
no |
no |
302 |
Smallest Rectangle Enclosing Black Pixels |
Hard |
no |
no |
no |
no |
303 |
Range Sum Query - Immutable |
Easy |
Java |
Python |
no |
C++ |
304 |
Range Sum Query 2D - Immutable |
Medium |
no |
Python |
no |
C++ |
305 |
Number of Islands II |
Hard |
no |
no |
no |
no |
306 |
Additive Number |
Medium |
Java |
Python |
no |
no |
307 |
Range Sum Query - Mutable |
Medium |
Java |
no |
no |
C++ |
308 |
Range Sum Query 2D - Mutable |
Hard |
no |
no |
no |
no |
309 |
Best Time to Buy and Sell Stock with Cooldown |
Medium |
Java |
no |
no |
no |
310 |
Minimum Height Trees |
Medium |
no |
no |
no |
no |
311 |
Sparse Matrix Multiplication |
Medium |
no |
no |
no |
no |
312 |
Burst Balloons |
Hard |
no |
no |
no |
no |
313 |
Super Ugly Number |
Medium |
no |
no |
no |
no |
314 |
Binary Tree Vertical Order Traversal |
Medium |
no |
no |
no |
no |
315 |
Count of Smaller Numbers After Self |
Hard |
Java |
Python |
no |
no |
316 |
Remove Duplicate Letters |
Hard |
Java |
no |
no |
no |
317 |
Shortest Distance from All Buildings |
Hard |
no |
no |
no |
no |
318 |
Maximum Product of Word Lengths |
Medium |
Java |
Python |
no |
C++ |
319 |
Bulb Switcher |
Medium |
Java |
Python |
no |
C++ |
320 |
Generalized Abbreviation |
Medium |
no |
no |
no |
no |
321 |
Create Maximum Number |
Hard |
no |
no |
no |
no |
322 |
Coin Change |
Medium |
Java |
no |
no |
no |
323 |
Number of Connected Components in an Undirected Graph |
Medium |
no |
no |
no |
no |
324 |
Wiggle Sort II |
Medium |
no |
Python |
no |
C++ |
325 |
Maximum Size Subarray Sum Equals k |
Medium |
no |
no |
no |
no |
326 |
Power of Three |
Easy |
Java |
Python |
no |
C++ |
327 |
Count of Range Sum |
Hard |
no |
no |
no |
no |
328 |
Odd Even Linked List |
Medium |
Java |
Python |
no |
C++ |
329 |
Longest Increasing Path in a Matrix |
Hard |
Java |
Python |
no |
no |
330 |
Patching Array |
Hard |
no |
no |
no |
C++ |
331 |
Verify Preorder Serialization of a Binary Tree |
Medium |
Java |
Python |
no |
no |
332 |
Reconstruct Itinerary |
Medium |
no |
no |
no |
no |
333 |
Largest BST Subtree |
Medium |
no |
no |
no |
no |
334 |
Increasing Triplet Subsequence |
Medium |
Java |
Python |
no |
no |
335 |
Self Crossing |
Hard |
no |
no |
no |
no |
336 |
Palindrome Pairs |
Hard |
no |
no |
no |
no |
337 |
House Robber III |
Medium |
Java |
Python |
no |
no |
338 |
Counting Bits |
Medium |
Java |
Python |
no |
C++ |
339 |
Nested List Weight Sum |
Easy |
no |
no |
no |
no |
340 |
Longest Substring with At Most K Distinct Characters |
Hard |
no |
no |
no |
no |
341 |
Flatten Nested List Iterator |
Medium |
Java |
Python |
no |
no |
342 |
Power of Four |
Easy |
Java |
Python |
no |
no |
343 |
Integer Break |
Medium |
Java |
Python |
no |
C++ |
344 |
Reverse String |
Easy |
Java |
Python |
no |
C++ |
345 |
Reverse Vowels of a String |
Easy |
Java |
Python |
no |
C++ |
346 |
Moving Average from Data Stream |
Easy |
no |
no |
no |
no |
347 |
Top K Frequent Elements |
Medium |
Java |
Python |
no |
C++ |
348 |
Design Tic-Tac-Toe |
Medium |
no |
no |
no |
no |
349 |
Intersection of Two Arrays |
Easy |
Java |
no |
no |
C++ |
350 |
Intersection of Two Arrays II |
Easy |
Java |
no |
no |
C++ |
351 |
Android Unlock Patterns |
Medium |
no |
no |
no |
no |
352 |
Data Stream as Disjoint Intervals |
Hard |
Java |
no |
no |
no |
353 |
Design Snake Game |
Medium |
no |
no |
no |
no |
354 |
Russian Doll Envelopes |
Hard |
Java |
no |
no |
no |
355 |
Design Twitter |
Medium |
Java |
no |
no |
no |
356 |
Line Reflection |
Medium |
no |
no |
no |
no |
357 |
Count Numbers with Unique Digits |
Medium |
Java |
no |
no |
C++ |
358 |
Rearrange String k Distance Apart |
Hard |
no |
no |
no |
no |
359 |
Logger Rate Limiter |
Easy |
no |
no |
no |
no |
360 |
Sort Transformed Array |
Medium |
no |
no |
no |
no |
361 |
Bomb Enemy |
Medium |
no |
no |
no |
no |
362 |
Design Hit Counter |
Medium |
no |
no |
no |
no |
363 |
Max Sum of Rectangle No Larger Than K |
Hard |
Java |
no |
no |
no |
364 |
Nested List Weight Sum II |
Medium |
no |
no |
no |
no |
365 |
Water and Jug Problem |
Medium |
Java |
no |
no |
C++ |
366 |
Find Leaves of Binary Tree |
Medium |
no |
no |
no |
no |
367 |
Valid Perfect Square |
Medium |
Java |
no |
no |
C++ |
368 |
Largest Divisible Subset |
Medium |
Java |
no |
no |
no |
369 |
Plus One Linked List |
Medium |
no |
no |
no |
no |
370 |
Range Addition |
Medium |
no |
no |
no |
no |
371 |
Sum of Two Integers |
Easy |
Java |
no |
no |
C++ |
372 |
Super Pow |
Medium |
Java |
no |
no |
no |
373 |
Find K Pairs with Smallest Sums |
Medium |
Java |
no |
no |
no |
374 |
Guess Number Higher or Lower |
Easy |
Java |
no |
no |
C++ |
375 |
Guess Number Higher or Lower II |
Medium |
Java |
no |
no |
no |
376 |
Wiggle Subsequence |
Medium |
Java |
no |
no |
no |
377 |
Combination Sum IV |
Medium |
Java |
no |
no |
no |
378 |
Kth Smallest Element in a Sorted Matrix |
Medium |
Java |
no |
no |
C++ |
379 |
Design Phone Directory |
Medium |
no |
no |
no |
no |
380 |
Insert Delete GetRandom O(1) |
Hard |
Java |
no |
no |
no |
381 |
Insert Delete GetRandom O(1) - Duplicates allowed |
Hard |
Java |
no |
no |
no |
382 |
Linked List Random Node |
Medium |
Java |
no |
no |
C++ |
383 |
Ransom Note |
Easy |
Java |
no |
no |
C++ |
384 |
Shuffle an Array |
Medium |
Java |
no |
no |
C++ |
385 |
Mini Parser |
Medium |
Java |
no |
no |
no |
386 |
Lexicographical Numbers |
Medium |
Java |
no |
no |
no |
387 |
First Unique Character in a String |
Easy |
Java |
no |
no |
C++ |
388 |
Longest Absolute File Path |
Medium |
Java |
no |
no |
no |
389 |
Find the Difference |
Easy |
Java |
no |
no |
C++ |
390 |
Elimination Game |
Medium |
Java |
no |
no |
no |
391 |
Perfect Rectangle |
Hard |
Java |
no |
no |
no |
392 |
Is Subsequence |
Medium |
Java |
no |
no |
C++ |
393 |
UTF-8 Validation |
Medium |
Java |
no |
no |
no |
394 |
Decode String |
Medium |
Java |
no |
no |
no |
395 |
Longest Substring with At Least K Repeating Characters |
Medium |
Java |
no |
no |
no |
396 |
Rotate Function |
Easy |
Java |
no |
no |
C++ |
397 |
Integer Replacement |
Medium |
Java |
no |
no |
no |
398 |
Random Pick Index |
Medium |
Java |
no |
no |
C++ |
399 |
Evaluate Division |
Medium |
no |
no |
no |
no |
400 |
Nth Digit |
Easy |
Java |
no |
no |
C++ |
401 |
Binary Watch |
Easy |
Java |
no |
no |
C++ |
402 |
Remove K Digits |
Medium |
Java |
no |
no |
C++ |
403 |
Frog Jump |
Hard |
Java |
no |
no |
no |
404 |
Sum of Left Leaves |
Easy |
Java |
no |
no |
C++ |
405 |
Convert a Number to Hexadecimal |
Easy |
Java |
no |
no |
C++ |
406 |
Queue Reconstruction by Height |
Medium |
Java |
no |
no |
C++ |
407 |
Trapping Rain Water II |
Hard |
no |
no |
no |
no |
408 |
Valid Word Abbreviation |
Easy |
no |
no |
no |
no |
409 |
Longest Palindrome |
Easy |
Java |
no |
no |
C++ |
410 |
Split Array Largest Sum |
Hard |
no |
no |
no |
no |
411 |
Minimum Unique Word Abbreviation |
Hard |
no |
no |
no |
no |
412 |
Fizz Buzz |
Easy |
no |
no |
no |
C++ |
413 |
Arithmetic Slices |
Medium |
no |
no |
no |
C++ |
415 |
Add Strings |
Easy |
Java |
no |
no |
C++ |
416 |
Partition Equal Subset Sum |
Medium |
Java |
no |
no |
no |
417 |
Pacific Atlantic Water Flow |
Medium |
Java |
no |
no |
no |
418 |
Sentence Screen Fitting |
Medium |
no |
no |
no |
no |
419 |
Battleships in a Board |
Medium |
no |
no |
no |
C++ |
423 |
Reconstruct Original Digits from English |
Medium |
no |
no |
no |
C++ |
434 |
Number of Segments in a String |
Easy |
no |
no |
no |
C++ |
437 |
Path Sum III |
Easy |
no |
no |
no |
C++ |
438 |
Find All Anagrams in a String |
Easy |
no |
no |
no |
C++ |
441 |
Arranging Coins |
Easy |
no |
no |
no |
C++ |
442 |
Find All Duplicates in an Array |
Medium |
no |
no |
no |
C++ |
445 |
Add Two Numbers II |
Medium |
no |
no |
no |
C++ |
447 |
Number of Boomerangs |
Easy |
no |
no |
no |
C++ |
448 |
Find All Numbers Disappeared in an Array |
Easy |
no |
no |
no |
C++ |
451 |
Sort Characters By Frequency |
Medium |
no |
no |
no |
C++ |
453 |
Minimum Moves to Equal Array Elements |
Easy |
no |
no |
no |
C++ |
454 |
4Sum II |
Medium |
no |
no |
no |
C++ |
455 |
Assign Cookies |
Easy |
no |
no |
no |
C++ |
459 |
Repeated Substring Pattern |
Easy |
no |
no |
no |
C++ |
461 |
Hamming Distance |
Easy |
no |
no |
no |
C++ |
462 |
Minimum Moves to Equal Array Elements II |
Medium |
no |
no |
no |
C++ |
463 |
Island Perimeter |
Easy |
no |
no |
no |
C++ |
464 |
Can I Win |
Medium |
no |
no |
no |
C++ |
468 |
Validate IP Address |
Medium |
no |
no |
no |
C++ |
475 |
Heaters |
Easy |
no |
no |
no |
C++ |
476 |
Number Complement |
Easy |
no |
no |
no |
C++ |
477 |
Total Hamming Distance |
Medium |
no |
no |
no |
C++ |
481 |
Magical String |
Medium |
no |
no |
no |
C++ |
482 |
License Key Formatting |
Medium |
no |
no |
no |
C++ |
485 |
Max Consecutive Ones |
Easy |
no |
no |
no |
C++ |
486 |
Predict the Winner |
Medium |
no |
no |
no |
C++ |
491 |
Increasing Subsequences |
Medium |
no |
no |
no |
C++ |
492 |
Construct the Rectangle |
Medium |
no |
no |
no |
C++ |
494 |
Target Sum |
Medium |
no |
no |
no |
C++ |
495 |
Teemo Attacking |
Medium |
no |
no |
no |
C++ |
496 |
Next Greater Element I |
Easy |
no |
no |
no |
C++ |
498 |
Diagonal Traverse |
Medium |
no |
no |
no |
C++ |
500 |
Keyboard Row |
Easy |
no |
no |
no |
C++ |
501 |
Find Mode in Binary Search Tree |
Medium |
no |
no |
no |
C++ |
503 |
Next Greater Element II |
Medium |
no |
no |
no |
C++ |
504 |
Base 7 |
Easy |
no |
no |
no |
C++ |
506 |
Relative Ranks |
Easy |
no |
no |
no |
C++ |
508 |
Most Frequent Subtree Sum |
Medium |
no |
no |
no |
C++ |
513 |
Find Bottom Left Tree Value |
Medium |
no |
no |
no |
C++ |
515 |
Find Largest Value in Each Tree Row |
Medium |
no |
no |
no |
C++ |
516 |
Longest Palindromic Subsequence |
Medium |
no |
no |
no |
C++ |