| Insert Delete Search and GetRandom in Constant Time 1 - Dupes not allowed | Medium | adobe
affirm
amazon
appdynamics
apple
bloomberg
databricks
facebook
flipkart
goldman-sachs
google
indeed
linkedin
microsoft
oracle
pinterest
pocket-gems
pure-storage
quora
salesforce
twilio
twitter
two-sigma
uber
visa
vmware
yandex
yelp | |
| Insert Delete Search and GetRandom in Constant Time 2 - Duplicates allowed | Hard | affirm
amazon
apple
databricks
facebook
google
linkedin
microsoft
uber
yelp | |
| Closest Leaf in a Binary Tree | Medium | amazon
databricks
facebook
google | |
| Remove Comments | Medium | databricks
goldman-sachs
google
hbo
microsoft
oracle
qualtrics
uber | |
| Second Degree Follower | Medium | databricks
facebook | |
| Web Crawler Multithreaded | Medium | amazon
databricks
dropbox
facebook
oracle | |
| Time Based Key-Value Store | Medium | amazon
apple
atlassian
databricks
facebook
flexport
google
linkedin
lyft
microsoft
netflix
oracle
square
stripe
sumologic
twitter
uber
vmware
zillow | |
| Convert Binary Search Tree to Sorted Doubly Linked List | Medium | amazon
bloomberg
databricks
facebook
google
lyft
microsoft
oracle
uber
vmware | |
| Vertical Order Traversal of a Binary Tree | Hard | adobe
amazon
bloomberg
databricks
facebook
google
linkedin
microsoft
reddit
samsung | |
| Intersection of Two Arrays 2 - Duplicates allowed | Easy | amazon
apple
bloomberg
bytedance
databricks
facebook
google
linkedin
microsoft
oracle
salesforce
uber
yandex | |
| Sliding Window Maximum | Hard | adobe
alibaba
amazon
apple
bloomberg
bytedance
citadel
coursera
databricks
facebook
google
lyft
microsoft
nutanix
oracle
pinterest
roblox
twitter
uber
vmware
wish
yelp
zenefits | |
| Skyline Problem | Hard | adobe
amazon
apple
databricks
facebook
goldman-sachs
google
houzz
microsoft
salesforce
tableau
twitter
uber
yelp
vmware | |
| Decode Ways | Medium | adobe
amazon
apple
baidu
barclays
bloomberg
cisco
databricks
expedia
facebook
goldman-sachs
google
huawei
lyft
microsoft
oracle
pinterest
snapchat
square
twitter
uber | |
| Trapping Rain Water | Hard | adobe
affirm
airbnb
amazon
apple
audible
bloomberg
bytedance
citadel
databricks
dataminr
ebay
electronic-arts
facebook
flipkart
goldman-sachs
google
grab
huawei
lyft
microsoft
nvidia
oracle
palantir-technologies
qualtrics
salesforce
servicenow
snapchat
tableau
twitter
uber
visa
wish
yahoo
yandex
zenefits | |
| First Missing Positive | Hard | adobe
amazon
apple
bloomberg
bytedance
databricks
ebay
facebook
google
grab
inmobi
microsoft
model-N
morgan-stanley
oracle
pocket-gems
salesforce
sap
stripe
tesla
twitch
uber
vmware
wayfair
wish | |
| Regular Expression Matching Problem | Hard | adobe
airbnb
alibaba
amazon
apple
bloomberg
bytedance
coursera
databricks
ebay
facebook
flipkart
google
houzz
lyft
microsoft
oracle
palantir-technologies
pocket-gems
twitter
uber
zulily | |
| Binary Tree Traversal - Vertical Order Traversal | Medium | adobe
amazon
bloomberg
bytedance
databricks
expedia
facebook
google
mathworks
microsoft
oracle
reddit
salesforce
snapchat
wish | |
| Flatten binary tree to linked list in order of preorder traversal | Medium | adobe
amazon
apple
bloomberg
bytedance
coupang
databricks
facebook
google
microsoft
nvidia
oracle
uber
yahoo | |