1808 |
Maximize Number of Nice Divisors |
C++ |
Hard |
1807 |
Evaluate the Bracket Pairs of a String |
C++ |
Medium |
1806 |
Minimum Number of Operations to Reinitialize a Permutation |
C++ |
Medium |
1805 |
Number of Different Integers in a String |
C++ |
Easy |
1803 |
Count Pairs With XOR in a Range |
C++ |
Hard |
1802 |
Maximum Value at a Given Index in a Bounded Array |
C++ |
Medium |
1801 |
Number of Orders in the Backlog |
C++ |
Medium |
1800 |
Maximum Ascending Subarray Sum |
C++ |
Easy |
1799 |
Maximize Score After N Operations |
C++ |
Hard |
1798 |
Maximum Number of Consecutive Values You Can Make |
C++ |
Medium |
1797 |
Design Authentication Manager |
C++ |
Medium |
1796 |
Second Largest Digit in a String |
C++ |
Easy |
1793 |
Maximum Score of a Good Subarray |
C++ |
Hard |
1792 |
Maximum Average Pass Ratio |
C++ |
Medium |
1791 |
Find Center of Star Graph |
C++ |
Medium |
1790 |
Check if One String Swap Can Make Strings Equal |
C++ |
Easy |
1787 |
Make the XOR of All Segments Equal to Zero |
C++ |
Hard |
1786 |
Number of Restricted Paths From First to Last Node |
C++ |
Medium |
1785 |
Minimum Elements to Add to Form a Given Sum |
C++ |
Medium |
1784 |
Check if Binary String Has at Most One Segment of Ones |
C++ |
Easy |
1782 |
Count Pairs Of Nodes |
C++ |
Hard |
1781 |
Sum of Beauty of All Substrings |
C++ |
Medium |
1780 |
Check if Number is a Sum of Powers of Three |
C++ |
Medium |
1779 |
Find Nearest Point That Has the Same X or Y Coordinate |
C++ |
Easy |
1775 |
Equal Sum Arrays With Minimum Number of Operations |
C++ |
Medium |
1774 |
Closest Dessert Cost |
C++ |
Medium |
1773 |
Count Items Matching a Rule |
C++ |
Easy |
1771 |
Maximize Palindrome Length From Subsequences |
C++ |
Hard |
1770 |
Maximum Score from Performing Multiplication Operations |
C++ |
Medium |
1769 |
Minimum Number of Operations to Move All Balls to Each Box |
C++ |
Medium |
1768 |
Merge Strings Alternately |
C++ |
Easy |
1766 |
Tree of Coprimes |
C++ |
Hard |
1765 |
Map of Highest Peak |
C++ |
Medium |
1764 |
Form Array by Concatenating Subarrays of Another Array |
C++ |
Medium |
1763 |
Longest Nice Substring |
C++ |
Easy |
1761 |
Minimum Degree of a Connected Trio in a Graph |
C++ |
Hard |
1760 |
Minimum Limit of Balls in a Bag |
C++ |
Medium |
1759 |
Count Number of Homogenous Substrings |
C++ |
Medium |
1758 |
Minimum Changes To Make Alternating Binary String |
C++ |
Easy |
1755 |
Closest Subsequence Sum |
C++ |
Hard |
1754 |
Largest Merge Of Two Strings |
C++ |
Medium |
1753 |
Maximum Score From Removing Stones |
C++ |
Medium |
1752 |
Check if Array Is Sorted and Rotated |
C++ |
Easy |
1751 |
Maximum Number of Events That Can Be Attended II |
C++ |
Hard |
1750 |
Minimum Length of String After Deleting Similar Ends |
C++ |
Medium |
1749 |
Maximum Absolute Sum of Any Subarray |
C++ |
Medium |
1748 |
Sum of Unique Elements |
C++ |
Easy |
1743 |
Restore the Array From Adjacent Pairs |
C++ |
Medium |
1742 |
Maximum Number of Balls in a Box |
C++ |
Easy |
1738 |
Find Kth Largest XOR Coordinate Value |
C++ |
Medium |
1736 |
Latest Time by Replacing Hidden Digits |
C++ |
Easy |
1734 |
Decode XORed Permutation |
C++ |
Medium |
1733 |
Minimum Number of People to Teach |
C++ |
Medium |
1732 |
Find the Highest Altitude |
C++ |
Easy |
1725 |
Number Of Rectangles That Can Form The Largest Square |
C++ |
Easy |
1717 |
Maximum Score From Removing Substrings |
C++ |
Medium |
1716 |
Calculate Money in Leetcode Bank |
C++ |
Easy |
1711 |
Count Good Meals |
C++ |
Medium |
1710 |
Maximum Units on a Truck |
C++ |
Easy |
1625 |
Lexicographically Smallest String After Applying Operations |
C++ |
Medium |
1624 |
Largest Substring Between Two Equal Characters |
C++ |
Easy |
1605 |
Find Valid Matrix Given Row and Column Sums |
C++ |
Medium |
1573 |
Number of Ways to Split a String |
C++ |
Medium |
1556 |
Thousand Separator |
C++ |
Easy |
1551 |
Minimum Operations to Make Array Equal |
C++ |
Medium |
1550 |
Three Consecutive Odds |
C++ |
Easy |
1541 |
Minimum Insertions to Balance a Parentheses String |
C++ |
Medium |
1535 |
Find the Winner of an Array Game |
C++ |
Medium |
1529 |
Bulb Switcher IV |
C++ |
Medium |
1528 |
Shuffle String |
C++ |
Easy |
1525 |
Number of Good Ways to Split a String |
C++ |
Medium |
1524 |
Number of Sub-arrays With Odd Sum |
C++ |
Medium |
1523 |
Count Odd Numbers in an Interval Range |
C++ |
Easy |
1513 |
Number of Substrings With Only 1s |
C++ |
Medium |
1470 |
Shuffle the Array |
C++ |
Easy |
1464 |
Maximum Product of Two Elements in an Array |
C++ |
Easy |
1460 |
Make Two Arrays Equal by Reversing Sub-arrays |
C++ |
Easy |
1376 |
Time Needed to Inform All Employees |
C++ |
Medium |
1375 |
Bulb Switcher III |
C++ |
Medium |
1353 |
Maximum Number of Events That Can Be Attended |
C++ |
Medium |
1333 |
Filter Restaurants by Vegan-Friendly, Price and Distance |
C++ |
Medium |
1207 |
Unique Number of Occurrences |
C++ |
Easy |
1170 |
Compare Strings by Frequency of the Smallest Character |
C++ |
Easy |
1071 |
Greatest Common Divisor of Strings |
C++ |
Easy |
1030 |
Matrix Cells in Distance Order |
C++ |
Easy |
1029 |
Two City Scheduling |
C++ |
Easy |
1028 |
Recover a Tree From Preorder Traversal |
C++ |
Hard |
1024 |
Video Stitching |
C++ |
Medium |
993 |
Cousins in Binary Tree |
C++ |
Easy |
991 |
Broken Calculator |
C++ |
Medium |
990 |
Satisfiability of Equality Equations |
C++ |
Medium |
989 |
Add to Array-Form of Integer |
C++ |
Easy |
988 |
Smallest String Starting From Leaf |
C++ |
Medium |
987 |
Vertical Order Traversal of a Binary Tree |
C++ |
Medium |
986 |
Interval List Intersections |
C++ |
Medium |
985 |
Sum of Even Numbers After Queries |
C++ |
Easy |
984 |
String Without AAA or BBB |
C++ |
Easy |
983 |
Minimum Cost For Tickets |
C++ |
Medium |
982 |
Triples with Bitwise AND Equal To Zero |
C++ |
Hard |
981 |
Time Based Key-Value Store |
C++ |
Medium |
980 |
Unique Paths III |
C++,Python |
Hard |
979 |
Distribute Coins in Binary Tree |
C++ |
Medium |
978 |
Longest Turbulent Subarray |
C++,Python |
Medium |
977 |
Squares of a Sorted Array |
C++, Python |
Easy |
976 |
Largest Perimeter Triangle |
C++, Python |
Easy |
971 |
Flip Binary Tree To Match Preorder Traversal |
Python |
Medium |
969 |
Pancake Sorting |
Python |
Medium |
961 |
N-Repeated element in size 2N Array |
C++ |
Easy |
958 |
Check Completeness of a Binary Tree |
Python |
Medium |
951 |
Flip Equivalent Binary Trees |
Python |
Medium |
950 |
Reveal Cards In Increasing Order |
Python |
Medium |
941 |
Valid Mountain Array |
Python |
Easy |
933 |
Number of Recent Calls |
C++ |
Easy |
931 |
Minimum Falling Path Sum |
C++ |
Medium |
929 |
Unique Email Addresses |
C++ |
Easy |
922 |
Sort Array By Parity II |
C++ |
Easy |
914 |
X of a Kind in a Deck of Cards |
Python |
Easy |
905 |
Sort Array By Parity |
C++ |
Easy |
876 |
Middle of the Linked List |
Python |
Easy |
859 |
Buddy Strings |
C++ |
Easy |
858 |
Mirror Reflection |
C++ |
Medium |
852 |
Peak Index in a Mountain Array |
C++ |
Easy |
849 |
Maximize Distance to Closest Person |
Python |
Easy |
844 |
Backspace String Compare |
C++ |
Easy |
837 |
Most Common Word |
C++ |
Easy |
830 |
Positions of Large Groups |
Python |
Easy |
820 |
Short Encoding of Words |
C++ |
Medium |
804 |
Unique Morse Code Words |
C++ |
Easy |
771 |
Jewels and Stones |
C++ |
Easy |
747 |
Largest Number At Least Twice of Others |
Python |
Easy |
746 |
Min Cost Climbing Stairs |
C++, Python |
Easy |
721 |
Accounts Merge |
C++ |
Medium |
717 |
1-bit and 2-bit Characters |
Python |
Easy |
714 |
Best Time to Buy and Sell Stock with Transaction Fee |
C++ |
Medium |
712 |
Minimum ASCII Delete Sum for Two Strings |
C++ |
Medium |
695 |
Max Area of Island |
C++ |
Medium |
687 |
Longest Univalue Path |
Python |
Easy |
684 |
Redundant Connection |
Python |
Medium |
674 |
Longest Continuous Increasing Subsequence |
Python |
Easy |
672 |
Bulb Switcher II |
C++ |
Medium |
671 |
Second Minimum Node In a Binary Tree |
Python |
Easy |
665 |
Non-decreasing Array |
Python |
Easy |
662 |
Maximum Width of Binary Tree |
Python |
Medium |
661 |
Image Smoother |
Python |
Easy |
655 |
Print Binary Tree |
Python |
Medium |
652 |
Find Duplicate Subtrees |
Python |
Medium |
647 |
Palindromic Substrings |
C++ |
Medium |
643 |
Maximum Average Subarray I |
C++, Python |
Easy |
628 |
Maximum Product of Three Numbers |
Python |
Easy |
623 |
Add One Row to Tree |
Python |
Medium |
581 |
Shortest Unsorted Continuous Subarray |
Python |
Easy |
572 |
Subtree of Another Tree |
Python |
Easy |
563 |
Binary Tree Tilt |
Python |
Easy |
547 |
Friend Circles |
C++ |
Medium |
543 |
Diameter of Binary Tree |
Python |
Easy |
538 |
Convert BST to Greater Tree |
Python |
Easy |
532 |
K-diff Pairs in an Array |
Python |
Easy |
520 |
Detect Capital |
C++ |
Easy |
518 |
Coin Change 2 |
C++ |
Medium |
516 |
Longest Palindromic Subsequence |
C++ |
Medium |
509 |
Fibonacci Number |
C++, Python |
Easy |
497 |
Random Point in Non-overlapping Rectangles |
C++ |
Medium |
494 |
Target Sum |
C++ |
Medium |
477 |
Total Hamming Distance |
C++ |
Medium |
463 |
Island Perimeter |
C++ |
Easy |
450 |
DeleteNodeInABST |
Python |
Medium |
449 |
Serialize and Deserialize BST |
Python |
Medium |
438 |
Find all Anagrams in a string |
C++ |
Medium |
437 |
Path Sum III |
Python |
Medium |
418 |
SentenceScreenFitting ๐ |
C++ |
Easy |
416 |
Partition Equal Subset Sum |
C++ |
Medium |
415 |
Add Strings |
C++ |
Easy |
414 |
Third Maximum Number |
C++, Python |
Easy |
413 |
Arithmetic Slices |
C++ |
Medium |
412 |
Fizz Buzz |
C++ |
Easy |
410 |
Split Array Largest Sum |
C++ |
Hard |
409 |
Longest Palindrome |
C++ |
Easy |
406 |
Queue Reconstruction by Height |
C++ |
Medium |
405 |
Convert a Number to Hexadecimal |
C++ |
Easy |
404 |
Sum of Left Leaves |
C++, Python |
Easy |
403 |
Frog Jump |
C++ |
Hard |
402 |
Remove K Digits |
C++ |
Medium |
401 |
Binary Watch |
C++ |
Easy |
400 |
Nth Digit |
C++ |
Medium |
399 |
Evaluate Division |
C++ |
Medium |
398 |
Random Pick Index |
C++ |
Medium |
397 |
Integer Replacement |
C++ |
Medium |
396 |
Rotate Function |
C++ |
Easy |
395 |
Longest Substring with At Least K Repeating Characters |
C++ |
Medium |
394 |
Decode String |
C++ |
Medium |
393 |
UTF-8 Validation |
C++ |
Medium |
392 |
Is Subsequence |
C++ |
Medium |
391 |
Perfect Rectangle |
C++ |
Hard |
390 |
Elimination Game |
C++ |
Medium |
389 |
Find the Difference |
C++ |
Easy |
388 |
Longest Absolute File Path |
C++ |
Medium |
387 |
First Unique Character in a String |
C++ |
Easy |
386 |
Lexicographical Numbers |
C++ |
Medium |
385 |
Mini Parser |
C++ |
Medium |
384 |
Shuffle an Array |
C++ |
Medium |
383 |
Ransom Note |
C++ |
Easy |
382 |
Linked List Random Node |
C++ |
Medium |
381 |
Insert Delete GetRandom O(1) - Duplicates allowed |
C++ |
Hard |
380 |
Insert Delete GetRandom O(1) |
C++ |
Hard |
377 |
Combination Sum IV |
C++ |
Medium |
376 |
Wiggle Subsequence |
C++ |
Medium |
371 |
Sum of Two Integers |
C++ |
Easy |
367 |
Valid Perfect Square |
C++ |
Easy |
357 |
Count Numbers with Unique Digits |
C++ |
Medium |
350 |
Intersection of Two Arrays II |
C++ |
Easy |
349 |
Intersection of Two Arrays |
C++ |
Easy |
347 |
Top K Frequent Elements |
C++ |
Medium |
345 |
Reverse Vowels of a String |
C++ |
Easy |
344 |
Reverse String |
C++ |
Easy |
343 |
Integer Break |
C++ |
Medium |
342 |
Power of Four |
C++ |
Easy |
341 |
Flatten Nested List Iterator |
C++ |
Medium |
338 |
Counting Bits |
C++ |
Medium |
337 |
House Robber III |
C++, Python |
Medium |
336 |
Palindrome Pairs |
C++ |
Hard |
334 |
Increasing Triplet Subsequence |
C++ |
Medium |
332 |
Reconstruct Itinerary |
C++ |
Medium |
331 |
Verify Preorder Serialization of a Binary Tree |
C++ |
Medium |
330 |
Patching Array |
C++ |
Medium |
329 |
Longest Increasing Path in a Matrix |
C++ |
Medium |
328 |
Odd Even Linked List |
C++ |
Easy |
327 |
Count of Range Sum |
C++ |
Hard |
326 |
Power of Three |
C++ |
Easy |
324 |
Wiggle Sort II |
C++ |
Medium |
322 |
Coin Change |
C++ |
Medium |
321 |
Create Maximum Number |
C++ |
Hard |
319 |
Bulb Switcher |
C++ |
Medium |
318 |
Maximum Product of Word Lengths |
C++ |
Medium |
316 |
Remove Duplicate Letters |
C++ |
Hard |
315 |
Count of Smaller Numbers After Self |
C++ |
Hard |
313 |
Super Ugly Number |
C++ |
Medium |
312 |
Burst Balloons |
C++ |
Hard |
310 |
Minimum Height Trees |
C++ |
Medium |
309 |
Best Time to Buy and Sell Stock with Cooldown |
C++ |
Medium |
307 |
Range Sum Query - Mutable |
C++ |
Medium |
306 |
Additive Number |
C++ |
Medium |
304 |
Range Sum Query 2D - Immutable |
C++ |
Medium |
303 |
Range Sum Query - Immutable |
C++ |
Easy |
301 |
Remove Invalid Parentheses |
C++ |
Hard |
300 |
Longest Increasing Subsequence |
C++ |
Medium |
299 |
Bulls and Cows |
C++ |
Easy |
297 |
Serialize and Deserialize Binary Tree |
C++ |
Medium |
295 |
Find Median from Data Stream |
C++ |
Hard |
292 |
Nim Game |
C++ |
Easy |
290 |
Word Pattern |
C++ |
Easy |
289 |
Game of Life |
C++ |
Medium |
287 |
Find the Duplicate Number |
C++, Python |
Hard |
285 |
Inorder Successor in BST ๐ |
Java |
Medium |
284 |
Peeking Iterator |
C++ |
Medium |
283 |
Move Zeroes |
C++ |
Easy |
282 |
Expression Add Operators |
C++ |
Hard |
279 |
Perfect Squares |
C++ |
Medium |
278 |
First Bad Version |
C++, Java |
Easy |
275 |
H-Index II |
C++ |
Medium |
274 |
H-Index |
C++ |
Medium |
273 |
Integer to English Words |
C++ |
Medium |
268 |
Missing Number |
C++ |
Medium |
264 |
Ugly Number II |
C++ |
Medium |
263 |
Ugly Number |
C++ |
Easy |
260 |
Single Number III |
C++ |
Medium |
258 |
Add Digits |
C++ |
Easy |
257 |
Binary Tree Paths |
C++ |
Easy |
242 |
Valid Anagram |
C++, Java |
Easy |
241 |
Different Ways to Add Parentheses |
C++, Python |
Medium |
240 |
Search a 2D Matrix II |
C++, Java, Python |
Medium |
239 |
Sliding Window Maximum |
C++ |
Hard |
238 |
Product of Array Except Self |
C++ |
Medium |
237 |
Delete Node in a Linked List |
C++ |
Easy |
236 |
Lowest Common Ancestor of a Binary Tree |
C++, Java, Python |
Medium |
235 |
Lowest Common Ancestor of a Binary Search Tree |
C++, Python |
Easy |
234 |
Palindrome Linked List |
C++ |
Easy |
233 |
Number of Digit One |
C++ |
Medium |
232 |
Implement Queue using Stacks |
C++, Java |
Easy |
231 |
Power of Two |
C++ |
Easy |
230 |
Kth Smallest Element in a BST |
C++, Python |
Medium |
229 |
Majority Element II |
C++ |
Medium |
228 |
Summary Ranges |
C++ |
Easy |
227 |
Basic Calculator II |
C++ |
Medium |
226 |
Invert Binary Tree |
C++ |
Easy |
225 |
Implement Stack using Queues |
C++, Java |
Medium |
224 |
Basic Calculator |
C++ |
Medium |
223 |
Rectangle Area |
C++ |
Easy |
222 |
Count Complete Tree Nodes |
C++, Python |
Medium |
221 |
Maximal Square |
C++ |
Medium |
220 |
Contains Duplicate III |
C++, Python |
Medium |
219 |
Contains Duplicate II |
C++, Python |
Easy |
218 |
The Skyline Problem |
C++ |
Hard |
217 |
Contains Duplicate |
C++ |
Easy |
216 |
Combination Sum III |
C++ |
Medium |
215 |
Kth Largest Element in an Array |
C++ |
Medium |
214 |
Shortest Palindrome |
C++ |
Hard |
213 |
House Robber II |
C++ |
Medium |
212 |
Word Search II |
C++ |
Hard |
211 |
Add and Search Word - Data structure design |
C++ |
Medium |
210 |
Course Schedule II |
C++ |
Medium |
209 |
Minimum Size Subarray Sum |
C++ |
Medium |
208 |
Implement Trie (Prefix Tree) |
C++ |
Medium |
207 |
Course Schedule |
C++ |
Medium |
206 |
Reverse Linked List |
C++, Java |
Easy |
205 |
Isomorphic Strings |
C++ |
Easy |
204 |
Count Primes |
C++ |
Easy |
203 |
Remove Linked List Elements |
C++ |
Easy |
202 |
Happy Number |
C++, Python |
Easy |
201 |
Bitwise AND of Numbers Range |
C++ |
Medium |
200 |
Number of Islands |
C++, Python |
Medium |
199 |
Binary Tree Right Side View |
C++ |
Medium |
198 |
House Robber |
C++, Python |
Easy |
191 |
Number of 1 Bits |
C++ |
Easy |
190 |
Reverse Bits |
C++ |
Easy |
189 |
Rotate Array |
C++, Java |
Easy |
188 |
Best Time to Buy and Sell Stock IV |
C++ |
Hard |
187 |
Repeated DNA Sequences |
C++ |
Medium |
186 |
Reverse Words in a String II ๐ |
C++ |
Medium |
179 |
Largest Number |
C++ |
Medium |
174 |
Dungeon Game |
C++ |
Hard |
173 |
Binary Search Tree Iterator |
C++, Java, Python |
Medium |
172 |
Factorial Trailing Zeroes |
C++ |
Easy |
171 |
Excel Sheet Column Number |
C++ |
Easy |
170 |
Two Sum III - Data structure design ๐ |
C++ |
Easy |
169 |
Majority Element |
C++ |
Easy |
168 |
Excel Sheet Column Title |
C++ |
Easy |
167 |
Two Sum II - Input array is sorted ๐ |
C++ |
Medium |
166 |
Fraction to Recurring Decimal |
C++ |
Medium |
165 |
Compare Version Numbers |
C++ |
Easy |
164 |
Maximum Gap |
C++ |
Hard |
163 |
Missing Ranges ๐ |
C++ |
Medium |
162 |
Find Peak Element |
C++, Java |
Medium |
161 |
One Edit Distance๐ |
C++ |
Medium |
160 |
Intersection of Two Linked Lists |
C++ |
Easy |
159 |
Longest Substring with At Most Two Distinct Characters ๐ |
C++ |
Hard |
158 |
Read N Characters Given Read4 II - Call multiple times ๐ |
C++ |
Hard |
157 |
Read N Characters Given Read4 ๐ |
C++ |
Easy |
156 |
Binary Tree Upside Down ๐ |
C++ |
Medium |
155 |
Min Stack |
C++, Java |
Easy |
154 |
Find Minimum in Rotated Sorted Array II |
C++ |
Hard |
153 |
Find Minimum in Rotated Sorted Array |
C++, Java |
Medium |
152 |
Maximum Product Subarray |
C++ |
Medium |
151 |
Reverse Words in a String |
C++, Java |
Medium |
150 |
Evaluate Reverse Polish Notation |
C++ |
Medium |
149 |
Max Points on a Line |
C++ |
Hard |
148 |
Sort List |
C++, Python |
Medium |
147 |
Insertion Sort List |
C++, Python |
Medium |
146 |
LRU Cache |
C++, Java |
Hard |
145 |
Binary Tree Postorder Traversal |
C++, Python |
Hard |
144 |
Binary Tree Preorder Traversal |
C++, Java |
Medium |
143 |
Reorder List |
C++, Python |
Medium |
142 |
Linked List Cycle II |
C++, Python |
Medium |
141 |
Linked List Cycle |
C++ |
Medium |
140 |
Word Break II |
C++ |
Hard |
139 |
Word Break |
C++ |
Medium |
138 |
Copy List with Random Pointer |
C++, Python |
Hard |
137 |
Single Number II |
C++ |
Medium |
136 |
Single Number |
C++ |
Medium |
135 |
Candy |
C++ |
Hard |
134 |
Gas Station |
C++ |
Medium |
133 |
Clone Graph |
C++ |
Medium |
132 |
Palindrome Partitioning II |
C++ |
Hard |
131 |
Palindrome Partitioning |
C++ |
Medium |
130 |
Surrounded Regions |
C++ |
Medium |
129 |
Sum Root to Leaf Numbers |
C++, Python |
Medium |
128 |
Longest Consecutive Sequence |
C++ |
Hard |
127 |
Word Ladder |
C++ |
Medium |
126 |
Word Ladder II |
C++ |
Hard |
125 |
Valid Palindrome |
C++, Java |
Easy |
124 |
Binary Tree Maximum Path Sum |
C++, Java |
Hard |
123 |
Best Time to Buy and Sell Stock III |
C++ |
Hard |
122 |
Best Time to Buy and Sell Stock II |
C++ |
Medium |
121 |
Best Time to Buy and Sell Stock |
C++ |
Medium |
120 |
Triangle |
C++, Java |
Medium |
119 |
Pascal's Triangle II |
C++ |
Easy |
118 |
Pascal's Triangle |
C++ |
Easy |
117 |
Populating Next Right Pointers in Each Node II |
C++, Python |
Hard |
116 |
Populating Next Right Pointers in Each Node |
C++, Python |
Medium |
115 |
Distinct Subsequences |
C++ |
Hard |
114 |
Flatten Binary Tree to Linked List |
C++, Python |
Medium |
113 |
Path Sum II |
C++, Python |
Medium |
112 |
Path Sum |
C++ |
Easy |
111 |
Minimum Depth of Binary Tree |
C++ |
Easy |
110 |
Balanced Binary Tree |
C++, Java |
Easy |
109 |
Convert Sorted List to Binary Search Tree |
C++ |
Medium |
108 |
Convert Sorted Array to Binary Search Tree |
C++ |
Medium |
107 |
Binary Tree Level Order Traversal II |
C++ |
Easy |
106 |
Construct Binary Tree from Inorder and Postorder Traversal |
C++, Python |
Medium |
105 |
Construct Binary Tree from Preorder and Inorder Traversal |
C++, Python |
Medium |
104 |
Maximum Depth of Binary Tree |
C++, Java |
Easy |
103 |
Binary Tree Zigzag Level Order Traversal |
C++, Python |
Medium |
102 |
Binary Tree Level Order Traversal |
C++, Java |
Easy |
101 |
Symmetric Tree |
C++ |
Easy |
100 |
Same Tree |
C++ |
Easy |
99 |
Recover Binary Search Tree |
C++ |
Hard |
98 |
Validate Binary Search Tree |
C++, Java, Python |
Medium |
97 |
Interleaving String |
C++ |
Hard |
96 |
Unique Binary Search Trees |
C++, Python |
Medium |
95 |
Unique Binary Search Trees II |
C++, Python |
Medium |
94 |
Binary Tree Inorder Traversal |
C++ |
Medium |
93 |
Restore IP Addresses |
C++ |
Medium |
92 |
Reverse Linked List II |
C++, Java, Python |
Medium |
91 |
Decode Ways |
C++ |
Medium |
90 |
Subsets II |
C++, Java |
Medium |
89 |
Gray Code |
C++ |
Medium |
88 |
Merge Sorted Array |
C++ |
Easy |
87 |
Scramble String |
C++ |
Hard |
86 |
Partition List |
C++, Python |
Medium |
85 |
Maximal Rectangle |
C++ |
Hard |
84 |
Largest Rectangle in Histogram |
C++ |
Hard |
83 |
Remove Duplicates from Sorted List |
C++ |
Easy |
82 |
Remove Duplicates from Sorted List II |
C++, Python |
Medium |
81 |
Search in Rotated Sorted Array II |
C++ |
Medium |
80 |
Remove Duplicates from Sorted Array II |
C++ |
Medium |
79 |
Word Search |
C++ |
Medium |
78 |
Subsets |
C++, Java, Python |
Medium |
77 |
Combinations |
C++ |
Medium |
76 |
Minimum Window Substring |
C++ |
Hard |
75 |
Sort Colors |
C++ |
Medium |
74 |
Search a 2D Matrix |
C++, Java |
Medium |
73 |
Set Matrix Zeroes |
C++ |
Medium |
72 |
Edit Distance |
C++ |
Hard |
71 |
Simplify Path |
C++ |
Medium |
70 |
Climbing Stairs |
C++, Java |
Easy |
69 |
Sqrt(x) |
C++ |
Medium |
68 |
Text Justification |
C++ |
Hard |
67 |
Add Binary |
C++ |
Easy |
66 |
Plus One |
C++ |
Easy |
65 |
Valid Number |
C++ |
Easy |
64 |
Minimum Path Sum |
C++, Java |
Medium |
63 |
Unique Paths II |
C++, Java |
Medium |
62 |
Unique Paths |
C++, Java |
Medium |
61 |
Rotate List |
C++ |
Medium |
60 |
Permutation Sequence |
C++ |
Medium |
59 |
Spiral Matrix II |
C++ |
Medium |
58 |
Length of Last Word |
C++, Java |
Easy |
57 |
Insert Interval |
C++ |
Hard |
56 |
Merge Intervals |
C++ |
Hard |
55 |
Jump Game |
C++, Python |
Medium |
54 |
Spiral Matrix |
C++ |
Medium |
53 |
Maximum Subarray |
C++, Java |
Medium |
52 |
N-Queens II |
C++ |
Hard |
51 |
N-Queens |
C++ |
Hard |
50 |
"Pow(x, n)" |
C++, Java |
Medium |
49 |
Group Anagrams |
C++ |
Medium |
48 |
Rotate Image |
C++ |
Medium |
47 |
Permutations II |
C++ |
Hard |
46 |
Permutations |
C++ |
Medium |
45 |
Jump Game II |
C++ |
Hard |
44 |
Wildcard Matching |
C++ |
Hard |
43 |
Multiply Strings |
C++ |
Medium |
42 |
Trapping Rain Water |
C++ |
Hard |
41 |
First Missing Positive |
C++, Python |
Hard |
40 |
Combination Sum II |
C++ |
Medium |
39 |
Combination Sum |
C++ |
Medium |
38 |
Count and Say |
C++, Java |
Easy |
37 |
Sudoku Solver |
C++ |
Hard |
36 |
Valid Sudoku |
C++ |
Easy |
35 |
Search Insert Position |
C++, Java |
Medium |
34 |
Search for a Range |
C++, Java |
Medium |
33 |
Search in Rotated Sorted Array |
C++, Java |
Hard |
32 |
Longest Valid Parentheses |
C++ |
Hard |
31 |
Next Permutation |
C++ |
Medium |
30 |
Substring with Concatenation of All Words |
C++ |
Hard |
29 |
Divide Two Integers |
C++ |
Medium |
28 |
Implement strStr() |
C++, Java |
Easy |
27 |
Remove Element |
C++ |
Easy |
26 |
Remove Duplicates from Sorted Array |
C++, Java |
Easy |
25 |
Reverse Nodes in k-Group |
C++ |
Hard |
24 |
Swap Nodes in Pairs |
C++ |
Medium |
23 |
Merge k Sorted Lists |
C++ |
Hard |
22 |
Generate Parentheses |
C++ |
Medium |
21 |
Merge Two Sorted Lists |
C++ |
Easy |
20 |
Valid Parentheses |
C++ |
Easy |
19 |
Remove Nth Node From End of List |
C++, Python |
Easy |
18 |
4Sum |
C++ |
Medium |
17 |
Letter Combinations of a Phone Number |
C++ |
Medium |
16 |
3Sum Closest |
C++ |
Medium |
15 |
3Sum |
C++ |
Medium |
14 |
Longest Common Prefix |
C++ |
Easy |
13 |
Roman to Integer |
C++ |
Easy |
12 |
Integer to Roman |
C++ |
Medium |
11 |
Container With Most Water |
C++, Java |
Medium |
10 |
Regular Expression Matching |
C++ |
Hard |
9 |
Palindrome Number |
C++, Java |
Easy |
8 |
String to Integer (atoi) |
C++ |
Easy |
7 |
Reverse Integer |
C++ |
Easy |
6 |
ZigZag Conversion |
C++ |
Easy |
5 |
Longest Palindromic Substring |
C++ |
Medium |
4 |
Median of Two Sorted Arrays |
C++ |
Hard |
3 |
Longest Substring Without Repeating Characters |
C++ |
Medium |
2 |
Add Two Numbers |
C++ |
Medium |
1 |
Two Sum |
C++, Go |
Easy |