| The Airport With the Most Traffic |
Medium
|
|
|
| The Category of Each Member in the Store |
Medium
|
|
|
| The Change in Global Rankings |
Medium
|
|
|
| The First Day of the Maximum Recorded Degree in Each City |
Medium
|
|
|
| The Number of Passengers in Each Bus I |
Medium
|
|
|
| Valid Palindrome 4 - is string palindrome after at most 2 char replacement |
Medium
|
|
|
| Active Users |
Medium
|
|
|
| All the Pairs With the Maximum Number of Common Followers |
Medium
|
|
|
| Bank Account Summary |
Medium
|
|
|
| Binary Searchable Numbers in an Unsorted Array |
Medium
|
|
|
| Change the Root of a Binary Tree |
Medium
|
|
|
| Clone N-ary Tree |
Medium
|
amazon
|
|
| Count Apples and Oranges |
Medium
|
|
|
| Count Pairs of Equal Substrings With Minimum Difference |
Medium
|
|
|
| Countries You Can Safely Invest In |
Medium
|
|
|
| Cutting Ribbons |
Medium
|
|
|
| Design an Expression Tree With Evaluate Function |
Medium
|
|
|
| Design Most Recently Used Queue |
Medium
|
|
|
| Dot Product of Two Sparse Vectors |
Medium
|
|
|
| Find Interview Candidates |
Medium
|
|
|
| Find Root of N-Ary Tree |
Medium
|
google
|
|
| Grand Slam Titles |
Medium
|
|
|
| Group Employees of the Same Salary |
Medium
|
|
|
| Guess the Majority in a Hidden Array |
Medium
|
google
|
|
| Strings Differ by One Character |
Medium
|
|
|
| Strong Friendship |
Medium
|
|
|
| The Most Recent Orders for Each Product |
Medium
|
|
|
| Widest Pair of Indices With Equal Range Sum |
Medium
|
|
|
| Capital Gain-Loss |
Medium
|
robinhood
|
|
| Activity Participants |
Medium
|
ibm
|
|
| Design A Leaderboard |
Medium
|
amazon
bloomberg
google
wayfair
|
|
| Encode Number |
Medium
|
quora
|
|
| Find the Start and End Number of Continuous Ranges |
Medium
|
microsoft
|
|
| Synonymous Sentences |
Medium
|
cruise-automation
|
|
| Tree Diameter |
Medium
|
amazon
facebook
google
|
|
| Team Scores in Football Tournament |
Medium
|
oracle
wayfair
|
|
| Toss Strange Coins |
Medium
|
twitch
|
|
| Two Sum BSTs |
Medium
|
amazon
|
|
| Analyze User Website Visit Pattern |
Medium
|
amazon
|
|
| Article Views II |
Medium
|
linkedin
|
|
| Connecting Cities With Minimum Cost |
Medium
|
amazon
uber
|
|
| Design Bounded Blocking Queue |
Medium
|
amazon
bloomberg
cloudera
google
linkedin
microsoft
oracle
uber
|
|
| Design File System |
Medium
|
airbnb
amazon
|
|
| Find Smallest Common Element in All Rows |
Medium
|
amazon
microsoft
|
|
| The Earliest Moment When Everyone Become Friends |
Medium
|
expedia
|
|
| All Paths from Source Lead to Destination |
Medium
|
amazon
google
|
|
| Campus Bikes |
Medium
|
amazon
bytedance
facebook
google
|
|
| Find K-Length Substrings With No Repeated Characters |
Medium
|
amazon
|
|
| Shortest Distance After Road Addition Queries I |
Medium
|
|
|
| Candy Crush |
Medium
|
bloomberg
facebook
google
rubrik
twitch
|
|