| Populate next pointer to right node in Binary Tree | Medium | amazon
bloomberg
facebook
google
microsoft
oracle | |
| Range Sum Query 2D - Immutable | Medium | amazon
apple
cruise-automation
facebook
google
houzz
lyft
microsoft
vmware | |
| Reconstruct Itinerary | Hard | amazon
apple
bloomberg
citadel
facebook
goldman-sachs
google
microsoft
qualtrics
snapchat
square
twilio
uber
yandex
yelp | |
| Rectangle Area - Total area of two rectangles | Medium | apple
facebook
microsoft
nvidia
juniper | |
| Remove K Digits | Medium | adobe
amazon
bloomberg
bytedance
didi
facebook
google
microsoft
nutanix
oracle
snapchat
vmware | |
| Reverse Words in a String 2 | Medium | amazon
google
microsoft
uber
vmware | |
| Reverse Words in a String 3 | Easy | amazon
apple
bloomberg
microsoft
paypal
salesforce
snapchat
yahoo
zappos | |
| 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 |
|
| Search in Rotated Sorted Array 2 - Check if number exists - Duplicates allowed | Medium | adobe
amazon
bloomberg
facebook
google
microsoft | |
| Select Copy Paste 1 - Minimum operations | Medium | bloomberg
microsoft | |
| 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 | |
| Shortest Palindrome 1 - Prepending characters | Hard | adobe
amazon
bloomberg
facebook
google
microsoft
oracle
pocket-gems | |
| 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 | |
| Sudoku Solver | Hard | adobe
amazon
apple
arista-networks
doordash
dropbox
expedia
facebook
google
microsoft
oracle
riot-games
roblox
snapchat
uber
vmware
wish | |
| Swap Nodes in Pairs | Medium | adobe
amazon
apple
bloomberg
ebay
facebook
google
lyft
microsoft
oracle
sap
uber | |
| Unique BSTs 2 - Generate | Medium | adobe
amazon
apple
facebook
microsoft
yahoo | |
| Valid Number | Hard | adobe
amazon
apple
facebook
google
linkedin
microsoft
tripadvisor | |
| Valid Sudoku | Medium | adobe
amazon
apple
bloomberg
cruise-automation
doordash
facebook
google
microsoft
oracle
pinterest
roblox
salesforce
snapchat
twitter
uber
vmware | |
| 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 | |
| Word Break 2 - Construct a sentence | Hard | amazon
apple
audible
bloomberg
bookingcom
dropbox
ebay
facebook
google
microsoft
oracle
pinterest
snapchat
twitter
uber
zillow | |
| Zigzag Iterator | Medium | amazon
apple
cruise-automation
facebook
google
microsoft
yandex | |
| Validate IP Address | Medium | amazon
cisco
facebook
google
microsoft
twitter
uber | |
| Implement Rand10() Using Rand7() | Medium | apple
bloomberg
bytedance
linkedin
microsoft | |
| Sliding Window Median | Hard | amazon
apple
facebook
google
microsoft
snapchat
spotify | |
| Permutation in String | Medium | amazon
bloomberg
facebook
google
lyft
microsoft
uber
yahoo
yandex | |
| Shuffle the Array | Easy | adobe
microsoft | |
| Find Duplicate Subtrees | Medium | amazon
bloomberg
facebook
google
lyft
microsoft
oracle
uber | |
| Most Common Word | Easy | amazon
apple
google
microsoft
oracle | |
| Max Area of Island | Medium | adobe
affirm
amazon
apple
bloomberg
bytedance
cruise-automation
doordash
facebook
google
intuit
mathworks
microsoft
oracle
palantir-technologies
qualtrics
twitch
uber
wish
zillow | |
| Design Skiplist | Hard | ebay
google
microsoft
pure-storage
twitter | |
| Count Odd Numbers in an Interval Range | Easy | microsoft | |
| Sum of Subarray Minimums | Medium | apple
hulu
microsoft | |
| Check Completeness of a Binary Tree | Medium | amazon
bytedance
facebook
google
microsoft
oracle | |
| Kth Missing Positive Number | Easy | microsoft | |
| Number of Provinces | Medium | adobe
amazon
atlassian
bloomberg
drawbridge
ebay
facebook
goldman-sachs
google
linkedin
microsoft
pocket-gems
salesforce
twitter
two-sigma
uber | |
| Shortest Path in Binary Matrix | Medium | amazon
facebook
google
microsoft
uber | |
| 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 | |
| Possible Bipartition | Medium | apple
facebook
google
microsoft | |
| Print Binary Tree | Medium | facebook
linkedin
microsoft
poynt
uber | |
| Circular Array Loop | Medium | google
microsoft
nutanix | |
| Island Perimeter | Easy | amazon
apple
bloomberg
facebook
google
microsoft | |
| Minimum Number of Arrows to Burst Balloons | Medium | amazon
facebook
google
microsoft
quora | |
| All O`one Data Structure | Hard | amazon
bloomberg
facebook
google
linkedin
microsoft
uber | |
| Encode N-ary Tree to Binary Tree | Hard | microsoft | |
| Find All Duplicates in an Array | Medium | amazon
apple
bloomberg
facebook
google
lyft
microsoft
pocket-gems | |
| Flatten a Multilevel Doubly Linked List | Medium | amazon
apple
bloomberg
facebook
google
microsoft
uber | |
| Add Strings | Easy | adobe
airbnb
amazon
apple
bloomberg
bytedance
facebook
google
microsoft
nvidia
oracle
snapchat
square | |
| Convert Number to Hexadecimal Number Problem | Easy | facebook
microsoft | |
| Trapping Rain Water 2 | Hard | amazon
apple
bytedance
facebook
google
microsoft
twitter | |