| Binary Tree Inorder Traversal |
Easy
|
alibaba
amazon
apple
bloomberg
bytedance
facebook
google
microsoft
oracle
sap
uber
|
|
| Binary Tree Postorder Traversal |
Easy
|
adobe
amazon
facebook
google
uber
|
|
| 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
|
|
| Last Stone Weight |
Easy
|
amazon
google
|
|
| Cousins in Binary Tree |
Easy
|
adobe
amazon
bloomberg
facebook
goldman-sachs
microsoft
|
|
| Implement queue using deque |
Easy
|
|
|
| Implement stack using deque |
Easy
|
|
|
| Implement stack using priority queue |
Easy
|
adobe
microsoft
amazon
|
|
| Balanced delimiters in an expression |
Easy
|
uber
|
|
| Climbing Stairs - Take atmost 2 Steps |
Easy
|
adobe
alibaba
amazon
apple
baidu
bloomberg
citadel
facebook
goldman-sachs
google
huawei
linkedin
microsoft
nvidia
oracle
tripadvisor
uber
zulily
|
|
| Convert Sorted Array to height-balanced Binary Search Tree |
Easy
|
airbnb
amazon
apple
bloomberg
cisco
facebook
google
microsoft
oracle
yahoo
|
|
| Intersection of Two Linked Lists |
Easy
|
airbnb
alibaba
amazon
apache-design
bloomberg
bytedance
cisco
ebay
expedia
facebook
goldman-sachs
google
linkedin
microsoft
morgan-stanley
netapp
oracle
qualcomm
redfin
sap
tencent
yahoo
|
|
| Rearrange array elements - first and second half in alternating order |
Easy
|
|
|
| Diameter Of a Binary Tree |
Easy
|
adobe
amazon
apple
atlassian
baidu
bloomberg
bytedance
facebook
google
intel
microsoft
oracle
qualtrics
tencent
|
|
| Linked List Cycle 1 - Detect Cycle |
Easy
|
adobe
amazon
apple
bloomberg
cisco
ebay
facebook
goldman-sachs
google
linkedin
microsoft
oracle
vmware
yahoo
|
|
| Maximum Depth of Binary Tree |
Easy
|
adobe
amazon
apple
bloomberg
bytedance
facebook
goldman-sachs
google
linkedin
microsoft
paypal
sap
uber
yahoo
|
|
| Same Tree |
Easy
|
amazon
apple
bloomberg
facebook
google
linkedin
microsoft
|
|
| Sum of Left Leaves |
Easy
|
adobe
amazon
bloomberg
expedia
facebook
google
mathworks
|
|
| Binary Tree Preorder Traversal |
Easy
|
amazon
bloomberg
cisco
google
microsoft
|
|
| Find Second largest element in an array |
Easy
|
|
|
| Find Deepest Node in a Binary Tree |
Easy
|
google
uber
|
|
| 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
|
|
| Is Subsequence |
Easy
|
amazon
bloomberg
coursera
facebook
google
pinterest
|
|
| Subarrays vs Subsequences vs Subsets Definition |
Easy
|
|
|
| Print all subarrays of a given array |
Easy
|
|
|
| Majority Element 1 - with n by 2 definition |
Easy
|
facebook
google
microsoft
yahoo
|
|
| Check if Array is Consecutive Positive Integers |
Easy
|
|
|
| Contains Duplicate 1 - Check if array has duplicates |
Easy
|
adobe
airbnb
amazon
apple
bloomberg
facebook
microsoft
oracle
palantir-technologies
yahoo
|
|
| Find most frequent element in the array |
Easy
|
|
|
| Find duplicates in a given array |
Easy
|
|
|
| Subtree of Another Tree |
Easy
|
amazon
bloomberg
ebay
facebook
google
microsoft
samsung
|
|
| Longest Common Prefix in array of string |
Easy
|
adobe
alibaba
amazon
apple
bloomberg
cisco
ebay
facebook
google
ibm
ixl
microsoft
oracle
pinterest
quora
snapchat
splunk
twilio
visa
yelp
|
|
| Find duplicate number in array with 1 to N+1 numbers with one number repeating |
Easy
|
|
|
| Binary Search on Sorted Array |
Easy
|
amazon
microsoft
|
|
| Flood Fill |
Easy
|
amazon
apple
bloomberg
facebook
google
microsoft
palantir-technologies
qualtrics
snapchat
uber
vmware
|
|
| Two Sum |
Easy
|
adobe
aetion
affirm
airbnb
alibaba
amazon
apple
audible
baidu
blackrock
bloomberg
bookingcom
box
bytedance
cisco
citadel
cloudera
deutsche-bank
didi
drawbridge
dropbox
ebay
emc
expedia
facebook
factset
ge-digital
godaddy
goldman-sachs
google
groupon
huawei
ibm
indeed
intel
intuit
jpmorgan
linkedin
lyft
mathworks
microsoft
morgan-stanley
netease
nvidia
oracle
paypal
qualcomm
quora
radius
roblox
salesforce
samsung
sap
servicenow
snapchat
splunk
spotify
tableau
tencent
twilio
twitter
uber
valve
visa
vmware
wish
works-applications
yahoo
yandex
yelp
zillow
zoho
|
|
| Meeting Rooms 1 - Can person attend all meetings |
Easy
|
amazon
bloomberg
facebook
google
microsoft
|
|
| Middle of the linked list |
Easy
|
adobe
amazon
apple
cisco
goldman-sachs
microsoft
oracle
paypal
samsung
|
|
| Triangle Judgement Problem |
Easy
|
|
|
| Implement Queue using Stacks |
Easy
|
amazon
apple
bloomberg
citadel
google
mathworks
microsoft
oracle
salesforce
uber
yahoo
yandex
|
|
| Implement stack using queues |
Easy
|
amazon
bloomberg
citadel
google
mathworks
microsoft
twilio
yahoo
|
|
| Tenth Line Problem |
Easy
|
adobe
apple
google
oracle
|
|
| Valid Phone Numbers Problem |
Easy
|
apple
|
|
| Combine Two Tables Problem |
Easy
|
adobe
amazon
apple
google
yahoo
|
|
| Excel Sheet Column Title |
Easy
|
adobe
apple
facebook
factset
google
microsoft
yahoo
zenefits
|
|
| Missing Ranges |
Easy
|
amazon
facebook
google
oracle
|
|
| Read N Characters Given Read4 |
Easy
|
facebook
google
|
|
| Add Binary Strings |
Easy
|
adobe
amazon
apple
facebook
google
microsoft
oracle
|
|
| Arranging Coins |
Easy
|
amazon
godaddy
|
|
| Majority Element - Boyer–Moore majority vote algorithm |
Easy
|
adobe
amazon
apple
google
microsoft
oracle
snapchat
tencent
twitter
yahoo
zenefits
|
|