| Valid Parenthesis String |
Medium
|
alibaba
amazon
bloomberg
facebook
google
|
|
| 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
|
|
| Generate Random Point in a Circle |
Medium
|
facebook
leap-motion
|
|
| Sliding Window Median |
Hard
|
amazon
apple
facebook
google
microsoft
snapchat
spotify
|
|
| Permutation in String |
Medium
|
amazon
bloomberg
facebook
google
lyft
microsoft
uber
yahoo
yandex
|
|
| Number of Closed Islands |
Medium
|
amazon
facebook
google
|
|
| Number of Ways to Stay in the Same Place After Some Steps |
Hard
|
facebook
google
|
|
| Remove All Adjacent Duplicates In String 1 |
Easy
|
amazon
bloomberg
facebook
google
oracle
paypal
paytm
|
|
| Diagonal Traverse 2 |
Medium
|
facebook
google
|
|
| Find Duplicate Subtrees |
Medium
|
amazon
bloomberg
facebook
google
lyft
microsoft
oracle
uber
|
|
| Linked List Random Node |
Medium
|
amazon
facebook
google
|
|
| 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
|
|
| Prefix and Suffix Search |
Hard
|
facebook
google
|
|
| Koko Eating Bananas |
Medium
|
adobe
airbnb
amazon
facebook
google
|
|
| Check Completeness of a Binary Tree |
Medium
|
amazon
bytedance
facebook
google
microsoft
oracle
|
|
| 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
|
|
| Similar String Groups |
Hard
|
amazon
facebook
google
snapchat
|
|
| 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
|
|
| Snapshot Array |
Medium
|
amazon
apple
ebay
facebook
google
snapchat
uber
|
|
| 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
|
|
| Arithmetic Slices II - Subsequence |
Hard
|
adobe
alibaba
baidu
facebook
|
|
| 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
|
|
| Valid Word Abbreviation |
Easy
|
facebook
google
|
|
| Daily Temperatures |
Medium
|
adobe
amazon
apple
bloomberg
cisco
expedia
facebook
goldman-sachs
google
linkedin
microsoft
nvidia
uber
zillow
|
|
| Leaf-Similar Trees |
Easy
|
amazon
atlassian
facebook
google
microsoft
|
|
| Non-decreasing Subsequences |
Medium
|
facebook
yahoo
|
|
| Path Sum 3 - Count paths from parent to child |
Medium
|
amazon
bloomberg
facebook
microsoft
oracle
quora
uber
zillow
|
|
| Hamming Distance |
Easy
|
amazon
facebook
|
|
| Total Hamming Distance |
Medium
|
facebook
google
|
|
| 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
|
|
| 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
|
|
| Maximum Sum of 3 Non-Overlapping Subarrays |
Hard
|
facebook
google
|
|
| Add to Array-Form of Integer |
Easy
|
facebook
google
|
|
| Maximum Difference Between Node and Ancestor |
Medium
|
amazon
facebook
google
|
|
| Convert Binary Search Tree to Sorted Doubly Linked List |
Medium
|
amazon
bloomberg
databricks
facebook
google
lyft
microsoft
oracle
uber
vmware
|
|
| Verifying an Alien Dictionary |
Easy
|
airbnb
amazon
facebook
microsoft
|
|