| Binary Search Tree BST Operations - Insert |
Medium
|
amazon
atlassian
facebook
google
microsoft
|
|
| Find Leaves of Binary Tree |
Medium
|
amazon
atlassian
ebay
google
linkedin
pocket-gems
|
|
| Palindromic Substrings |
Medium
|
adobe
amazon
apple
atlassian
citadel
coursera
facebook
goldman-sachs
google
linkedin
mathworks
microsoft
pure-storage
roblox
twitter
uber
vmware
|
|
| Lemonade Change Problem |
Easy
|
amazon
atlassian
|
|
| 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
|
|
| 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
|
|
| Peeking Iterator |
Medium
|
amazon
apple
atlassian
ebay
facebook
google
microsoft
oracle
yahoo
|
|
| Validate Binary Search Tree |
Medium
|
adobe
amazon
apple
asana
atlassian
bloomberg
bytedance
capital-one
ebay
facebook
goldman-sachs
google
linkedin
mathworks
microsoft
oracle
salesforce
sap
tripadvisor
uber
visa
vmware
yahoo
yandex
|
|
| Number of Provinces |
Medium
|
adobe
amazon
atlassian
bloomberg
drawbridge
ebay
facebook
goldman-sachs
google
linkedin
microsoft
pocket-gems
salesforce
twitter
two-sigma
uber
|
|
| Leaf-Similar Trees Problem |
Easy
|
amazon
atlassian
facebook
google
microsoft
|
|
| Maximum Subarray Sum |
Medium
|
adobe
alibaba
amazon
apple
asana
atlassian
bloomberg
bytedance
capital-one
cisco
citadel
ebay
expedia
facebook
goldman-sachs
google
ibm
intel
jpmorgan
linkedin
microsoft
morgan-stanley
nvidia
oracle
palantir-technologies
paypal
qualcomm
salesforce
sap
two-sigma
uber
visa
wayfair
yahoo
zillow
|
|
| Time Based Key-Value Store Problem |
Medium
|
amazon
apple
atlassian
databricks
facebook
flexport
google
linkedin
lyft
microsoft
netflix
oracle
square
stripe
sumologic
twitter
uber
vmware
zillow
|
|
| Greatest Common Divisor of Strings Problem |
Easy
|
atlassian
capital-one
|
|
| Backspace String Compare |
Easy
|
amazon
atlassian
facebook
google
microsoft
oracle
uber
|
|
| Design Hit Counter |
Medium
|
affirm
amazon
apple
atlassian
bloomberg
bookingcom
dropbox
google
indeed
linkedin
microsoft
netflix
oracle
pinterest
quip
snapchat
uber
visa
yahoo
zillow
|
|
| Flatten Nested List Iterator Problem |
Medium
|
airbnb
amazon
apple
atlassian
bloomberg
ebay
facebook
google
linkedin
lyft
microsoft
oracle
pinterest
snapchat
splunk
twitter
uber
vmware
|
|
| Kth Largest Element in an Array |
Medium
|
adobe
airbnb
alibaba
amazon
apple
atlassian
baidu
bloomberg
bytedance
ebay
expedia
facebook
goldman-sachs
google
grab
jpmorgan
linkedin
microsoft
oracle
pocket-gems
salesforce
snapchat
spotify
tencent
uber
vmware
yahoo
|
|
| Longest Increasing Subsequence LIS |
Medium
|
adobe
amazon
apple
atlassian
ebay
facebook
google
microsoft
oracle
salesforce
uber
vmware
|
|
| Lowest Common Ancestor of a Binary Tree |
Medium
|
adobe
airbnb
amazon
apple
atlassian
bloomberg
bytedance
ebay
facebook
google
intuit
linkedin
microsoft
oracle
paypal
pinterest
salesforce
splunk
uber
visa
yahoo
zillow
|
|
| Generate Parentheses Problem |
Medium
|
adobe
alibaba
amazon
apple
atlassian
bloomberg
bytedance
cisco
facebook
google
lyft
microsoft
nutanix
nvidia
salesforce
samsung
sap
snapchat
spotify
uber
yahoo
yandex
yelp
zenefits
|
|
| Valid Parentheses |
Easy
|
adobe
airbnb
akuna-capital
amazon
apple
atlassian
audible
barclays
blizzard
bloomberg
cisco
citadel
doordash
ebay
epic-systems
expedia
facebook
godaddy
goldman-sachs
google
ibm
intel
intuit
jpmorgan
linkedin
liveramp
lyft
mathworks
microsoft
morgan-stanley
oracle
paypal
postmates
riot-games
salesforce
samsung
sap
servicenow
splunk
spotify
tencent
tesla
triplebyte
twilio
twitter
uber
visa
vmware
yahoo
yandex
zenefits
zillow
|
|
| Binary Tree Right Side View |
Medium
|
adobe
amazon
apple
atlassian
bloomberg
bytedance
citadel
ebay
facebook
google
mathworks
microsoft
nvidia
oracle
paypal
sap
uber
vmware
|
|
| Diameter Of a Binary Tree |
Easy
|
adobe
amazon
apple
atlassian
baidu
bloomberg
bytedance
facebook
google
intel
microsoft
oracle
qualtrics
tencent
|
|
| Binary Tree Level Order Traversal - Level by Level |
Medium
|
adobe
amazon
apple
atlassian
bloomberg
cisco
citadel
ebay
expedia
facebook
google
linkedin
mathworks
microsoft
oracle
sap
uber
vmware
yahoo
|
|
| Merge Two Sorted Linked Lists |
Easy
|
adobe
airbnb
alibaba
amazon
apple
arista-networks
atlassian
bloomberg
bytedance
capital-one
cisco
ebay
facebook
google
huawei
indeed
intel
linkedin
lyft
microsoft
oracle
paypal
samsung
tencent
uber
visa
vmware
yahoo
yandex
|
|
| Evaluate Reverse Polish Notation |
Medium
|
amazon
atlassian
facebook
google
jane-street
linkedin
microsoft
opendoor
oracle
uber
vmware
yandex
zillow
|
|
| Subsets 1 |
Medium
|
adobe
amazon
apple
atlassian
bloomberg
bytedance
coupang
ebay
facebook
goldman-sachs
google
lyft
microsoft
uber
yahoo
|
|
| Meeting Rooms 2 - Minimum Meeting Rooms Required |
Medium
|
amazon
apple
atlassian
bloomberg
bookingcom
cisco
citadel
citrix
drawbridge
ebay
expedia
facebook
godaddy
goldman-sachs
google
lyft
microsoft
nutanix
oracle
paypal
postmates
quora
snapchat
uber
visa
yelp
|
|
| Next Permutation |
Medium
|
adobe
amazon
apple
atlassian
bloomberg
bytedance
ebay
facebook
google
houzz
jpmorgan
microsoft
quora
rubrik
samsung
sumologic
uber
|
|
| Number of Islands |
Medium
|
adobe
affirm
alibaba
amazon
appdynamics
apple
arista-networks
atlassian
audible
blackrock
bloomberg
bytedance
cisco
citadel
citrix
cohesity
cruise-automation
doordash
ebay
electronic-arts
evernote
expedia
facebook
godaddy
goldman-sachs
google
houzz
hulu
jpmorgan
linkedin
liveramp
lyft
mathworks
microsoft
nutanix
nvidia
oracle
palantir-technologies
paypal
qualtrics
roblox
salesforce
servicenow
snapchat
splunk
spotify
square
sumologic
tableau
twitch
twitter
uber
visa
vmware
wish
yahoo
zenefits
zulily
|
|
| Best Time To Buy And Sell Stock 3 - at most twice |
Hard
|
amazon
apple
atlassian
bloomberg
citadel
facebook
flipkart
google
microsoft
rubrik
two-sigma
|
|
| Merge Overlapping Intervals |
Medium
|
adobe
alibaba
amazon
apple
atlassian
bloomberg
bytedance
cisco
cohesity
coupang
cruise-automation
dataminr
doordash
ebay
facebook
godaddy
goldman-sachs
google
intuit
linkedin
microsoft
netflix
oracle
palantir-technologies
paypal
pinterest
postmates
salesforce
sap
servicenow
snapchat
sumologic
tencent
twitch
twitter
two-sigma
uber
visa
vmware
wayfair
wish
yahoo
yandex
yelp
zulily
|
|
| Symmetric Binary Tree |
Easy
|
adobe
alibaba
amazon
apple
atlassian
audible
bloomberg
facebook
google
linkedin
microsoft
oracle
salesforce
sap
tripadvisor
twitter
uber
visa
vmware
yandex
|
|
| Single Number 1 - All elements except one occur twice |
Easy
|
adobe
airbnb
amazon
apple
atlassian
bloomberg
facebook
google
microsoft
oracle
palantir-technologies
tencent
|
|
| Best Time To Buy And Sell Stock 1 - only one transaction |
Easy
|
adobe
akuna-capital
alibaba
amazon
apple
atlassian
audible
blackrock
bloomberg
bytedance
cisco
citadel
deutsche-bank
doordash
expedia
facebook
goldman-sachs
google
grab
groupon
intel
jpmorgan
linkedin
lyft
microsoft
morgan-stanley
oracle
paypal
redfin
sap
snapchat
tableau
tencent
uber
visa
vmware
yahoo
zillow
|
|
| Permutations of Array 1 |
Medium
|
adobe
amazon
apple
atlassian
bloomberg
bytedance
cisco
ebay
facebook
garena
godaddy
goldman-sachs
google
linkedin
microsoft
netease
oracle
paypal
salesforce
sap
uber
vmware
yahoo
|
|
| Letter Combinations of a Phone Number Problem |
Medium
|
amazon
apple
atlassian
bloomberg
cisco
dropbox
ebay
facebook
goldman-sachs
google
jpmorgan
lyft
microsoft
morgan-stanley
nutanix
oracle
quip
roblox
salesforce
servicenow
square
twilio
uber
vmware
yahoo
yelp
|
|
| Binary Search Tree BST Inorder Iterator |
Medium
|
alibaba
amazon
apple
atlassian
bloomberg
bytedance
cisco
cloudera
ebay
facebook
google
linkedin
microsoft
oracle
qualtrics
redfin
splunk
uber
|
|
| Valid Palindrome 2 Problem |
Easy
|
atlassian
facebook
google
microsoft
yahoo
|
|
| Design HashMap Problem |
Easy
|
adobe
amazon
apple
atlassian
dell
facebook
goldman-sachs
google
linkedin
microsoft
nvidia
oracle
reddit
salesforce
servicenow
tableau
twitter
uber
vmware
|
|
| Basic Calculator 2 Problem |
Medium
|
airbnb
amazon
apple
atlassian
doordash
ebay
facebook
google
houzz
indeed
intuit
ixl
microsoft
oracle
paypal
postmates
reddit
snapchat
tableau
tencent
uber
|
|
| Longest Substring Without Repeating Characters |
Medium
|
adobe
alation
alibaba
amazon
apple
atlassian
baidu
bloomberg
bytedance
cisco
coupang
ebay
expedia
facebook
goldman-sachs
google
huawei
microsoft
oracle
paypal
salesforce
samsung
sap
snapchat
spotify
twitch
uber
vmware
yahoo
yandex
yelp
zillow
zoho
|
|
| Top K Frequent Words Problem |
Medium
|
adobe
amazon
apple
atlassian
bloomberg
expedia
facebook
google
linkedin
microsoft
oracle
pocket-gems
salesforce
tripadvisor
uber
vmware
yelp
|
|
| Decode String Problem |
Medium
|
alibaba
amazon
appdynamics
apple
atlassian
bloomberg
bytedance
cisco
coupang
cruise-automation
ebay
facebook
google
huawei
hulu
microsoft
oracle
salesforce
snapchat
tencent
vmware
yahoo
yelp
|
|