| Lowest Common Ancestor of Deepest Leaves |
Medium
|
bloomberg
facebook
google
|
|
| Construct Binary Tree from Preorder and Postorder Traversal |
Medium
|
amazon
bloomberg
facebook
google
uber
|
|
| Making A Large Island |
Hard
|
amazon
facebook
google
uber
|
|
| Balance Parentheses with Minimum Insertions and Deletions |
Hard
|
facebook
|
|
| Check if a graph is minimally-connected |
Medium
|
facebook
|
|
| Word Subsets |
Medium
|
amazon
facebook
google
|
|
| Design a Sparse Array |
Easy
|
facebook
|
|
| Find Largest Value in Each Tree Row Problem |
Medium
|
amazon
apple
facebook
linkedin
microsoft
|
|
| Alien Dictionary |
Hard
|
airbnb
amazon
apple
bloomberg
cohesity
doordash
facebook
flipkart
google
microsoft
pinterest
pocket-gems
snapchat
square
twitter
uber
vmware
|
|
| Binary Search Tree BST Operations - Delete |
Medium
|
amazon
apple
bloomberg
cisco
facebook
google
linkedin
microsoft
oracle
uber
yahoo
|
|
| Binary Search Tree BST Operations - Insert |
Medium
|
amazon
atlassian
facebook
google
microsoft
|
|
| Construct Binary Search Tree BST from Preorder Traversal |
Medium
|
amazon
facebook
microsoft
oracle
|
|
| Find a Corresponding Node of a Binary Tree in a Clone of That Tree |
Easy
|
facebook
|
|
| K closest Points to Origin |
Medium
|
amazon
apple
asana
ebay
expedia
facebook
goldman-sachs
google
linkedin
microsoft
oracle
paypal
uber
visa
yahoo
|
|
| Maximum Binary Tree |
Medium
|
amazon
facebook
google
microsoft
|
|
| Non-overlapping Intervals |
Medium
|
amazon
apple
bloomberg
facebook
google
microsoft
stripe
|
|
| Number of Connected Components in an Undirected Graph |
Medium
|
amazon
facebook
google
linkedin
microsoft
twitter
|
|
| Pacific Atlantic Water Flow |
Medium
|
amazon
apple
bloomberg
facebook
google
microsoft
oracle
|
|
| Palindromic Substrings |
Medium
|
adobe
amazon
apple
atlassian
citadel
coursera
facebook
goldman-sachs
google
linkedin
mathworks
microsoft
pure-storage
roblox
twitter
uber
vmware
|
|
| Range Sum Query - Immutable |
Easy
|
amazon
bloomberg
facebook
goldman-sachs
google
microsoft
palantir-technologies
|
|
| Sum of Two Integers |
Medium
|
amazon
apple
facebook
google
hulu
|
|
| Task Scheduler |
Medium
|
amazon
apple
bloomberg
facebook
google
microsoft
nutanix
oracle
pinterest
uber
vmware
|
|
| Top K Frequent Elements |
Medium
|
amazon
apple
bloomberg
bytedance
ebay
facebook
goldman-sachs
google
hulu
linkedin
microsoft
oracle
pocket-gems
snapchat
spotify
uber
vmware
yahoo
yelp
|
|
| Closest Leaf in a Binary Tree |
Medium
|
amazon
databricks
facebook
google
|
|
| Debounce |
Medium
|
facebook
|
|
| Valid Palindrome 3 - Is string palindrome after deleting at most k chars |
Hard
|
facebook
google
|
|
| Interval List Intersections |
Medium
|
amazon
apple
bloomberg
cruise-automation
doordash
facebook
google
oracle
pinterest
snapchat
uber
|
|
| Diameter Of a N-Ary Tree |
Medium
|
facebook
google
|
|
| Is Graph Bipartite |
Medium
|
amazon
dropbox
ebay
facebook
google
linkedin
liveramp
microsoft
uber
|
|
| Robot Room Cleaner |
Hard
|
amazon
facebook
google
microsoft
|
|
| Target Sum |
Medium
|
facebook
google
microsoft
|
|
| Binary Tree Path - All root to leaf paths |
Easy
|
adobe
amazon
apple
facebook
google
microsoft
|
|
| Closest Binary Search Tree Value |
Easy
|
amazon
bloomberg
facebook
google
linkedin
microsoft
snapchat
|
|
| Closest Binary Search Tree Value II |
Hard
|
amazon
facebook
forusall
google
linkedin
|
|
| Validate Binary Tree Nodes |
Medium
|
facebook
|
|
| Sliding Puzzle Problem |
Hard
|
airbnb
amazon
facebook
google
microsoft
uber
|
|
| Shortest Subarray with Sum at Least K Problem |
Hard
|
amazon
facebook
goldman-sachs
google
|
|
| Remove Sub-Folders from the Filesystem Problem |
Medium
|
amazon
facebook
google
|
|
| Diagonal Traverse Problem |
Medium
|
amazon
apple
ebay
facebook
google
microsoft
quora
splunk
|
|
| Maximum Swap Problem |
Medium
|
amazon
apple
bytedance
facebook
microsoft
uber
|
|
| Smallest Range Covering Elements from K Lists Problem |
Hard
|
amazon
apple
facebook
google
lyft
microsoft
pinterest
snapchat
|
|
| Maximum Width Ramp Problem |
Medium
|
ebay
facebook
google
|
|
| Minimum Add to Make Parentheses Valid Problem |
Medium
|
amazon
facebook
servicenow
|
|
| Uncommon Words from Two Sentences Problem |
Easy
|
amazon
expedia
facebook
microsoft
|
|
| Conditional selection between x and y with bitwise operations problem |
Medium
|
facebook
|
|
| Spiral Matrix 3 - Traverse from Given Starting Point |
Medium
|
dataminr
facebook
|
|
| Determining the Existence of a Valid Secret Code in Mastermind Based on Given Guesses and Scores |
Medium
|
facebook
|
|
| Make Two Arrays Equal by Reversing Subarrays Problem |
Easy
|
facebook
|
|
| Number of Atoms Problem |
Hard
|
adobe
amazon
bytedance
facebook
google
pinterest
|
|
| Accounts Merge |
Medium
|
amazon
apple
bloomberg
facebook
google
houzz
linkedin
microsoft
oracle
|
|