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++ |