| Construct Binary Tree from Preorder and Postorder Traversal |
Medium
|
amazon
bloomberg
facebook
google
uber
|
|
| Making A Large Island |
Hard
|
amazon
facebook
google
uber
|
|
| Implement a 2D iterator class |
Medium
|
uber
|
|
| Length of the longest path in a weighted tree |
Hard
|
uber
|
|
| Construct K Palindrome Strings |
Medium
|
uber
|
|
| 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
|
|
| K closest Points to Origin |
Medium
|
amazon
apple
asana
ebay
expedia
facebook
goldman-sachs
google
linkedin
microsoft
oracle
paypal
uber
visa
yahoo
|
|
| Palindromic Substrings |
Medium
|
adobe
amazon
apple
atlassian
citadel
coursera
facebook
goldman-sachs
google
linkedin
mathworks
microsoft
pure-storage
roblox
twitter
uber
vmware
|
|
| 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
|
|
| Course Schedule 4 |
Medium
|
uber
|
|
| Interval List Intersections |
Medium
|
amazon
apple
bloomberg
cruise-automation
doordash
facebook
google
oracle
pinterest
snapchat
uber
|
|
| Is Graph Bipartite |
Medium
|
amazon
dropbox
ebay
facebook
google
linkedin
liveramp
microsoft
uber
|
|
| Sliding Puzzle Problem |
Hard
|
airbnb
amazon
facebook
google
microsoft
uber
|
|
| Maximum Swap Problem |
Medium
|
amazon
apple
bytedance
facebook
microsoft
uber
|
|
| Validating Consistency of Directional Rules Between Points Problem |
Hard
|
uber
|
|
| Random Pick with Blacklist Problem |
Hard
|
amazon
google
two-sigma
uber
|
|
| Regions Cut By Slashes Problem |
Medium
|
uber
|
|
| Most Profit Assigning Work Problem |
Medium
|
amazon
netease
nutanix
uber
|
|
| Replace Words |
Medium
|
uber
|
|
| Distribute Coins in Binary Tree Problem |
Medium
|
amazon
facebook
google
microsoft
uber
|
|
| Permutations of Array 2 - Array has duplicates |
Medium
|
adobe
amazon
apple
bloomberg
facebook
linkedin
microsoft
uber
vmware
|
|
| Implement Power Function 1 |
Medium
|
adobe
amazon
apple
asana
bloomberg
ebay
facebook
goldman-sachs
google
linkedin
microsoft
morgan-stanley
oracle
uber
vmware
|
|
| Maximum Points on a Line |
Hard
|
amazon
apple
bloomberg
directi
google
inmobi
linkedin
microsoft
tripadvisor
twitter
uber
|
|
| Reverse Integer Problem |
Medium
|
adobe
amazon
apple
barclays
bloomberg
cisco
facebook
google
jpmorgan
lyft
microsoft
netease
oracle
uber
yahoo
|
|
| Custom Sort String Problem |
Medium
|
amazon
facebook
google
uber
|
|
| Delete and Earn Problem |
Medium
|
akuna-capital
pocket-gems
uber
|
|
| Friend Words - One Edit Distance |
Medium
|
amazon
facebook
google
microsoft
snapchat
twitter
uber
|
|
| Split Message Based on Limit Problem |
Hard
|
amazon
uber
|
|
| Binary Tree Path Sum - Maximum between any two nodes |
Hard
|
adobe
amazon
appdynamics
apple
baidu
bloomberg
bytedance
facebook
google
intuit
microsoft
twitter
uber
vmware
|
|
| Calculating the mean and median of an unsorted array |
|
uber
|
|
| Count of Smaller Numbers After Self |
Hard
|
adobe
amazon
apple
bloomberg
facebook
google
microsoft
oracle
uber
|
|
| Factor Combinations |
Medium
|
google
linkedin
pinterest
uber
|
|
| Find Median from Data Stream |
Hard
|
adobe
amazon
apple
atlassian
bloomberg
bytedance
citadel
ebay
expedia
facebook
goldman-sachs
google
microsoft
netflix
oracle
pinterest
qualtrics
salesforce
snapchat
twitter
uber
vmware
yahoo
|
|
| Find Peak Element in a Given Array |
Medium
|
amazon
apple
bloomberg
bytedance
facebook
google
ixl
lyft
microsoft
quora
uber
vmware
yahoo
|
|
| Find the Closest Palindrome Problem |
Hard
|
amazon
facebook
google
microsoft
nutanix
pinterest
uber
yelp
|
|
| Jump Game 2 - Get min jumps |
Medium
|
adobe
amazon
apple
facebook
google
huawei
microsoft
nutanix
oracle
uber
|
|
| Least Number of Perfect Squares that Sums to n |
Medium
|
adobe
amazon
apple
cisco
ebay
facebook
godaddy
google
grammarly
linkedin
lyft
microsoft
uber
yandex
|
|
| Merge K Sorted Lists |
Hard
|
adobe
airbnb
alibaba
amazon
apple
atlassian
audible
bloomberg
box
bytedance
cisco
cohesity
cruise-automation
ebay
facebook
goldman-sachs
google
indeed
ixl
linkedin
lyft
mathworks
microsoft
nvidia
oracle
salesforce
sap
tableau
twitter
uber
vmware
wish
yahoo
yandex
zillow
|
|
| Palindrome Pairs |
Hard
|
airbnb
amazon
apple
bloomberg
facebook
google
square
uber
|
|
| Palindrome Permutation |
Easy
|
amazon
apple
bloomberg
facebook
google
microsoft
uber
|
|
| Reconstruct Itinerary Problem |
Hard
|
amazon
apple
bloomberg
citadel
facebook
goldman-sachs
google
microsoft
qualtrics
snapchat
square
twilio
uber
yandex
yelp
|
|
| Remove Invalid Parentheses Problem |
Hard
|
amazon
apple
bloomberg
facebook
google
houzz
ponyai
postmates
uber
|
|
| Reverse Words in a String 2 |
Medium
|
amazon
google
microsoft
uber
vmware
|
|
| Rotate n x n matrix by 90 degrees |
Medium
|
adobe
akuna-capital
amazon
apple
bloomberg
cisco
facebook
google
groupon
houzz
lyft
microsoft
nvidia
palantir
palantir-technologies
quora
salesforce
uber
wish
yandex
|
|
| Serialize and Deserialize Binary Tree |
Hard
|
amazon
apple
bloomberg
citadel
ebay
expedia
facebook
google
groupon
indeed
linkedin
microsoft
oracle
qualtrics
quora
salesforce
snapchat
tableau
uber
vmware
yahoo
|
|
| Sort Characters By Frequency |
Medium
|
amazon
bloomberg
expedia
facebook
google
linkedin
uber
|
|
| Spiral Matrix 1 - Return |
Medium
|
adobe
amazon
apple
bloomberg
bytedance
cisco
drawbridge
ebay
epic-systems
facebook
goldman-sachs
google
hulu
linkedin
microsoft
oracle
paypal
quip
robinhood
snapchat
uber
visa
|
|
| Square root of an integer |
Easy
|
amazon
apple
bloomberg
facebook
google
huawei
linkedin
lyft
microsoft
qualtrics
uber
wayfair
|
|