| 665 |
Non-decreasing Array |
Solution |
|
Medium |
| 7 |
Reverse Integer |
Solution |
|
Medium |
| 98 |
Validate Binary Search Tree |
Solution |
 |
Medium |
| 204 |
Count Primes |
Solution |
|
Medium |
| 19 |
Remove Nth Node From End of List |
Solution |
|
Medium |
| 34 |
Find First and Last Position of Element in Sorted Array |
Solution |
|
Medium |
| 229 |
Majority Element II |
Solution |
|
Medium |
| 142 |
Linked List Cycle II |
Solution |
|
Medium |
| 560 |
Swap Nodes in PairsSubarray Sum Equals K |
Solution |
|
Medium |
| 187 |
Repeated DNA Sequences |
Solution |
|
Medium |
| 56 |
Merge Intervals |
Solution |
|
Medium |
| 207 |
Course Schedule |
Solution |
|
Medium |
| 848 |
Shifting Letters |
Solution |
|
Medium |
| 1352 |
Product of the Last K Numbers |
Solution |
|
Medium |
| 147 |
Insertion Sort List |
Solution |
|
Medium |
| 380 |
Insert Delete GetRandom O(1) |
Solution |
|
Medium |
| 477 |
Total Hamming Distance |
Solution |
|
Medium |
| 148 |
Sort List |
Solution |
|
Medium |
| 729 |
My Calendar I |
Solution |
|
Medium |
| 676 |
Implement Magic Dictionary |
Solution |
|
Medium |
| 384 |
Shuffle an Array |
Solution |
|
Medium |
| 677 |
Map Sum Pairs |
Solution |
|
Medium |
| 2095 |
Delete the Middle Node of a Linked List |
Solution |
|
Medium |
| 1109 |
Corporate Flight Bookings |
Solution |
|
Medium |
| 24 |
Swap Nodes in Pairs |
Solution |
|
Medium |
| 167 |
Two Sum II - Input Array Is Sorted |
Solution |
|
Medium |
| 287 |
Find the Duplicate Number |
Solution |
|
Medium |
| 382 |
Linked List Random Node |
Solution |
|
Medium |
| 1508 |
Range Sum of Sorted Subarray Sums |
Solution |
|
Medium |
| 1023 |
Camelcase Matching |
Solution |
|
Medium |
| 378 |
Kth Smallest Element in a Sorted Matrix |
Solution |
|
Medium |
| 985 |
Sum of Even Numbers After Queries |
Solution |
|
Medium |
| 912 |
Sort an Array |
Solution |
|
Medium |
| 1584 |
Min Cost to Connect All Points |
Solution |
|
Medium |
| 901 |
Online Stock Span |
Solution |
 |
Medium |
| 215 |
Kth Largest Element in an Array |
Solution |
|
Medium |
| 398 |
Random Pick Index |
Solution |
|
Medium |
| 49 |
Group Anagrams |
Solution |
|
Medium |
| 2043 |
Simple Bank System |
Solution |
|
Medium |
| 347 |
Top K Frequent Elements |
Solution |
|
Medium |
| 973 |
K Closest Points to Origin |
Solution |
|
Medium |
| 230 |
Kth Smallest Element in a BST |
Solution |
|
Medium |
| 1433 |
Check If a String Can Break Another String |
Solution |
|
Medium |
| 1721 |
Swapping Nodes in a Linked List |
Solution |
|
Medium |
| 1860 |
Incremental Memory Leak |
Solution |
|
Medium |
| 1222 |
Queens That Can Attack the King |
Solution |
|
Medium |
| 442 |
Find All Duplicates in an Array |
Solution |
|
Medium |
| 1529 |
Minimum Suffix Flips |
Solution |
|
Medium |
| 2023 |
Number of Pairs of Strings With Concatenation Equal to Target |
Solution |
|
Medium |
| 1669 |
Merge In Between Linked Lists |
Solution |
|
Medium |
| 701 |
Insert into a Binary Search Tree |
Solution |
|
Medium |
| 1347 |
Minimum Number of Steps to Make Two Strings Anagram |
Solution |
|
Medium |
| 1823 |
Find the Winner of the Circular Game |
Solution |
|
Medium |
| 1381 |
Design a Stack With Increment Operation |
Solution |
|
Medium |
| 921 |
Minimum Add to Make Parentheses Valid |
Solution |
|
Medium |
| 1561 |
Maximum Number of Coins You Can Get |
Solution |
|
Medium |
| 1630 |
Arithmetic Subarrays |
Solution |
|
Medium |
| 2221 |
Find Triangular Sum of an Array |
Solution |
|
Medium |
| 763 |
Partition Labels |
Solution |
|
Medium |
| 1305 |
All Elements in Two Binary Search Trees |
Solution |
|
Medium |
| 1877 |
Minimize Maximum Pair Sum in Array |
Solution |
|
Medium |
| 1817 |
Finding the Users Active Minutes |
Solution |
|
Medium |
| 1551 |
Minimum Operations to Make Array Equal |
Solution |
|
Medium |
| 2149 |
Rearrange Array Elements by Sign |
Solution |
|
Medium |
| 2130 |
Maximum Twin Sum of a Linked List |
Solution |
|
Medium |
| 2161 |
Partition Array According to Given Pivot |
Solution |
|
Medium |
| 1409 |
Queries on a Permutation With Key |
Solution |
|
Medium |
| 2120 |
Execution of All Suffix Instructions Staying in a Grid |
Solution |
|
Medium |
| 2125 |
Number of Laser Beams in a Bank |
Solution |
|
Medium |
| 535 |
Encode and Decode TinyURL |
Solution |
|
Medium |
| 1637 |
Widest Vertical Area Between Two Points Containing No Points |
Solution |
|
Medium |
| 1038 |
Binary Search Tree to Greater Sum Tree |
Solution |
|
Medium |
| 1315 |
Sum of Nodes with Even-Valued Grandparent |
Solution |
|
Medium |
| 1282 |
Group the People Given the Group Size They Belong To |
Solution |
|
Medium |
| 1379 |
Find a Corresponding Node of a Binary Tree in a Clone of That Tree |
Solution |
|
Medium |
| 1769 |
Minimum Number of Operations to Move All Balls to Each Box |
Solution |
|
Medium |
| 1828 |
Queries on Number of Points Inside a Circle |
Solution |
|
Medium |
| 1476 |
Subrectangle Queries |
Solution |
|
Medium |
