| 201 |
Cheapest Flights Within K Stops
|
|
— |
30 |
Medium |
Solve |
| 202 |
Combination Sum
|
|
— |
30 |
Medium |
Solve |
| 203 |
Encode and Decode Strings
|
|
— |
30 |
Medium |
Solve |
| 204 |
Kth Largest Element in a Stream
|
|
— |
20 |
Easy |
Solve |
| 205 |
Linked List Cycle
|
|
— |
20 |
Easy |
Solve |
| 206 |
Sliding Window Maximum
|
|
— |
40 |
Hard |
Solve |
| 207 |
Two Sum
|
|
— |
20 |
Easy |
Solve |
| 208 |
Best Time to Buy and Sell Stock
|
|
— |
20 |
Easy |
Solve |
| 209 |
Decode Ways
|
|
— |
30 |
Medium |
Solve |
| 210 |
Diameter of Binary Tree
|
|
— |
20 |
Easy |
Solve |
| 211 |
Largest Rectangle in Histogram
|
|
— |
40 |
Hard |
Solve |
| 212 |
Merge Triplets to Form Target Triplet
|
|
— |
30 |
Medium |
Solve |
| 213 |
N-Queens
|
|
— |
40 |
Hard |
Solve |
| 214 |
Subsets
|
|
— |
30 |
Medium |
Solve |
| 215 |
Time Based Key-Value Store
|
|
— |
30 |
Medium |
Solve |
| 216 |
Valid Palindrome
|
|
— |
20 |
Easy |
Solve |
| 217 |
Add Two Numbers
|
|
— |
30 |
Medium |
Solve |
| 218 |
Count Good Nodes in Binary Tree
|
|
— |
30 |
Medium |
Solve |
| 219 |
Letter Combinations of a Phone Number
|
|
— |
30 |
Medium |
Solve |
| 220 |
Longest Common Subsequence
|
|
— |
30 |
Medium |
Solve |
| 221 |
Longest Repeating Character Replacement
|
|
— |
30 |
Medium |
Solve |
| 222 |
Median of Two Sorted Arrays
|
|
— |
40 |
Hard |
Solve |
| 223 |
Meeting Rooms II
|
|
— |
30 |
Medium |
Solve |
| 224 |
Min Stack
|
|
— |
30 |
Medium |
Solve |
| 225 |
Walls and Gates
|
|
— |
30 |
Medium |
Solve |
| 226 |
Design Add and Search Words Data Structure
|
|
— |
30 |
Medium |
Solve |
| 227 |
Edit Distance
|
|
— |
40 |
Hard |
Solve |
| 228 |
Generate Parentheses
|
|
— |
30 |
Medium |
Solve |
| 229 |
Linked List Cycle
|
|
— |
20 |
Easy |
Solve |
| 230 |
Maximum Depth of Binary Tree
|
|
— |
20 |
Easy |
Solve |
| 231 |
Pow(x, n)
|
|
— |
30 |
Medium |
Solve |
| 232 |
Reconstruct Itinerary
|
|
— |
40 |
Hard |
Solve |
| 233 |
Rotting Oranges
|
|
— |
30 |
Medium |
Solve |
| 234 |
Search a 2D Matrix
|
|
— |
30 |
Medium |
Solve |
| 235 |
Binary Tree Right Side View
|
|
— |
30 |
Medium |
Solve |
| 236 |
Design Twitter
|
|
— |
30 |
Medium |
Solve |
| 237 |
Diameter of Binary Tree
|
|
— |
20 |
Easy |
Solve |
| 238 |
Find Minimum in Rotated Sorted Array
|
|
— |
30 |
Medium |
Solve |
| 239 |
Hand of Straights
|
|
— |
30 |
Medium |
Solve |
| 240 |
Merge Two Sorted Lists
|
|
— |
20 |
Easy |
Solve |
| 241 |
Min Cost Climbing Stairs
|
|
— |
20 |
Easy |
Solve |
| 242 |
Missing Number
|
|
— |
20 |
Easy |
Solve |
| 243 |
Word Ladder
|
|
— |
40 |
Hard |
Solve |
| 244 |
Climbing Stairs
|
|
— |
20 |
Easy |
Solve |
| 245 |
Count Good Nodes in Binary Tree
|
|
— |
30 |
Medium |
Solve |
| 246 |
Implement Trie (Prefix Tree)
|
|
— |
30 |
Medium |
Solve |
| 247 |
LRU Cache
|
|
— |
30 |
Medium |
Solve |
| 248 |
Maximum Product Subarray
|
|
— |
30 |
Medium |
Solve |
| 249 |
Meeting Rooms
|
|
— |
20 |
Easy |
Solve |
| 250 |
Remove Nth Node From End of List
|
|
— |
30 |
Medium |
Solve |