| Lexicographically Smallest String with K-Position Moves | Easy | yahoo | |
| Prune Unary nodes to form Full Binary Tree | Medium | yahoo | |
| Dutch National Flag DNF | Medium | amazon
apple
bloomberg
ebay
facebook
google
linkedin
microsoft
oracle
paypal
pocket-gems
pure-storage
uber
vmware
yahoo | |
| Highway Billboard | Medium | microsoft
netapp
yahoo | |
| Shuffle an Array | Medium | amazon
apple
bloomberg
cisco
facebook
google
linkedin
microsoft
salesforce
tripadvisor
two-sigma
yahoo | |
| Reverse a directed graph | Medium | yahoo | |
| Delete in a Binary Search Tree | 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 | |
| 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 | |
| Binary Number with Alternating Bits | Easy | yahoo | |
| Jewels and Stones | Easy | adobe
amazon
apple
facebook
google
yahoo | |
| Matrix Cells in Distance Order | Easy | yahoo | |
| Defanging an IP Address | Easy | adobe
amazon
apple
facebook
google
yahoo | |
| Optimize Water Distribution in a Village | Hard | google
yahoo | |
| Maximum Distance in Arrays | Medium | yahoo | |
| Reverse Integer | Medium | adobe
amazon
apple
barclays
bloomberg
cisco
facebook
google
jpmorgan
lyft
microsoft
netease
oracle
uber
yahoo | |
| Palindrome Number | Easy | adobe
amazon
apple
bloomberg
facebook
google
hcl
jpmorgan
microsoft
oracle
yahoo | |
| Binary Tree Traversal - Zigzag Level Order Traversal | Medium | amazon
apple
bloomberg
bytedance
ebay
facebook
google
linkedin
microsoft
oracle
qualtrics
samsung
servicenow
yahoo
morgan-stanley | |
| Construct Binary Tree from Inorder and Preorder Traversal | Medium | adobe
amazon
apple
bloomberg
bytedance
citadel
facebook
google
microsoft
oracle
square
twitter
yahoo | |
| Count Primes | Medium | adobe
amazon
apple
bloomberg
capital-one
ebay
facebook
goldman-sachs
google
intel
microsoft
oracle
yahoo
yandex | |
| 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 | |
| Generate Nth Fibonacci Number | Easy | amazon
apple
barclays
facebook
mathworks
microsoft
sap
yahoo | |
| Kth Permutation Sequence of Numbers 1 to N | Hard | amazon
apple
facebook
google
microsoft
twitter
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 | |
| Reverse Words in a String 3 | Easy | amazon
apple
bloomberg
microsoft
paypal
salesforce
snapchat
yahoo
zappos | |
| 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 | |
| Unique BSTs 2 - Generate | Medium | adobe
amazon
apple
facebook
microsoft
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 | |
| Largest Palindrome Product | Hard | apple
yahoo | |
| Permutation in String | Medium | amazon
bloomberg
facebook
google
lyft
microsoft
uber
yahoo
yandex | |
| Subarray Sum Equals K | Medium | adobe
amazon
apple
bloomberg
ebay
expedia
facebook
goldman-sachs
google
indeed
linkedin
microsoft
oracle
quora
snapchat
twilio
uber
wish
yahoo
yandex | |
| Non-decreasing Subsequences | Medium | facebook
yahoo | |
| 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 | |
| Find the Index of the First Occurrence in a String | Easy | adobe
amazon
apple
bloomberg
citadel
dropbox
ebay
facebook
google
microsoft
oracle
paypal
pocket-gems
vmware
yahoo
yandex | |
| Next Greater Element 2 | Medium | amazon
bloomberg
facebook
google
microsoft
oracle
yahoo | |
| Design Hit Counter | Medium | affirm
amazon
apple
atlassian
bloomberg
bookingcom
dropbox
google
indeed
linkedin
microsoft
netflix
oracle
pinterest
quip
snapchat
uber
visa
yahoo
zillow | |
| Remove Duplicate Letters | Medium | adobe
amazon
apple
bytedance
facebook
google
microsoft
nutanix
yahoo | |
| Rank Scores | Medium | adobe
amazon
apple
facebook
yahoo | |
| Second Highest Salary Problem | Medium | adobe
amazon
apple
bloomberg
ebay
facebook
google
microsoft
yahoo | |
| Add Two Numbers represented as Linked List in Forward order | Medium | amazon
apple
bloomberg
bytedance
cisco
ebay
facebook
goldman-sachs
google
microsoft
oracle
uber
yahoo | |
| Course Schedule 1 - Is it Possible | Medium | amazon
apple
bloomberg
bytedance
cisco
cohesity
ebay
facebook
goldman-sachs
google
intuit
linkedin
microsoft
nutanix
oracle
paypal
salesforce
uber
wish
yahoo
yelp
zenefits | |
| All Nodes Distance K in Binary Tree | Medium | amazon
apple
bloomberg
bytedance
didi
facebook
google
hulu
microsoft
oracle
uber
yahoo | |
| 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 | |
| Restore IP Addresses | Medium | adobe
amazon
apple
facebook
microsoft
snapchat
vmware
yahoo | |
| Container With Most Water | Medium | adobe
amazon
apple
bloomberg
bytedance
facebook
goldman-sachs
google
lyft
microsoft
oracle
uber
vmware
yahoo | |
| Count Complete Tree Nodes | Easy | amazon
bloomberg
bytedance
facebook
google
microsoft
yahoo | |
| 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 | 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 | |