| Populate next pointer to right node in Perfect Binary Tree | Medium | amazon
apple
bloomberg
didi
facebook
google
microsoft
nutanix
oracle
sap
vmware | |
| Search a 2D Matrix 2 - Rows and columns are sorted | Medium | adobe
amazon
apple
baidu
bloomberg
bytedance
citadel
ebay
expedia
facebook
goldman-sachs
google
linkedin
microsoft
oracle
paypal
salesforce
sap
tencent
yahoo | |
| Validate Stack Sequences | Medium | google
linkedin | |
| Stone Game 1 | Medium | adobe | |
| Arithmetic Slices | Medium | aetion
amazon
baidu
bloomberg
facebook
microsoft | |
| Champagne Tower | Medium | google | |
| Longest Arithmetic Subsequence | Medium | amazon
facebook
google
microsoft
quora
snapdeal | |
| Maximum Length of Repeated Subarray | Medium | citadel
indeed
intuit
karat
pinterest
wayfair
facebook | |
| Minimum Falling Path Sum | Medium | amazon
apple
goldman-sachs
google | |
| Out of Boundary Paths | Medium | baidu | |
| Stone Game 2 | Medium | bytedancetoutiao
google | |
| Where Will the Ball Fall | Medium | | |
| Bitwise ORs of Subarrays | Medium | | |
| Generate nth ugly number | Medium | amazon
oracle
uber
google | |
| Can I Win | Medium | google
linkedin | |
| Ones and Zeroes | Medium | google | |
| House Robber 2 - Houses in circle | Medium | amazon
ebay
google
microsoft | |
| Palindrome Partitioning | Medium | adobe
amazon
bloomberg
google
microsoft
qualtrics
uber
yahoo | |
| Minimum Cost For Tickets | Medium | amazon
facebook
google
grab
uber | |
| Find duplicate elements in the array with 4KB memory only | Medium | | |
| Design a data structure for generic deck of cards | Medium | | |
| Design data structures for an online book reader system | Medium | | |
| Design the classes and data structures for a call center | Medium | | |
| Boats to Save People | Medium | amazon
factset
google
glassdoor | |
| Find Duplicate Number in array containing n+1 numbers between 1 and n | Medium | adobe
amazon
apple
bloomberg
ebay
facebook
google
intuit
microsoft
oracle
salesforce
tencent
vmware | |
| Kadane's Algorithm for Maximum Subarray Sum | Medium | | |
| 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 | |
| Binary Search on a linked list | Medium | | |
| Stack of plates | Medium | microsoft
amazon | |
| Evaluate Reverse Polish Notation | Medium | amazon
atlassian
facebook
google
jane-street
linkedin
microsoft
opendoor
oracle
uber
vmware
yandex
zillow | |
| Linked List Cycle 3 - Find length of cycle | Medium | | |
| Reverse Words in a String | Medium | amazon
apple
bloomberg
cisco
citadel
facebook
google
huawei
microsoft
nvidia
oracle
qualcomm
salesforce
snapchat
vmware
yelp
zillow | |
| Longest Palindromic Substring | Medium | adobe
airbnb
alibaba
amazon
appdynamics
apple
bloomberg
cisco
ebay
facebook
godaddy
google
huawei
jpmorgan
mathworks
microsoft
nutanix
oracle
paypal
pure-storage
roblox
samsung
sap
servicenow
tencent
uber
vmware
wayfair
yahoo
yandex | |
| Subsets 1 | Medium | adobe
amazon
apple
atlassian
bloomberg
bytedance
coupang
ebay
facebook
goldman-sachs
google
lyft
microsoft
uber
yahoo | |
| Maximum Number of Removable Characters Problem | Medium | | |
| Convert String to Integer atoi | Medium | adobe
amazon
apple
bloomberg
cisco
citadel
ebay
facebook
goldman-sachs
google
linkedin
microsoft
nvidia
oracle
redfin
sap
tencent
uber
vmware
zillow | |
| Check if a Matrix is Invertible | Medium | | |
| Sum of all subarrays | Medium | | |
| Finding the most frequent element in an array of numbers from 0 to n-1 | Medium | | |
| Find first duplicate number in an array containing numbers from 1 to n | Medium | | |
| Find duplicates in an array of integers within range 0 to n-1 | Medium | | |
| Majority Element 2 - With n by 3 definition | Medium | adobe
amazon
apple
bloomberg
facebook
google
microsoft
uber
zenefits | |
| Check if Array is Consecutive Integers | Medium | | |
| Find element which appears maximum number of times in the ranged array | Medium | | |
| Find local minima in a given array | Medium | | |
| Find local minimum or maximum in O(1) time in an array with elements differing by plus minus 1 | Medium | | |
| Find the smallest integer that cannot be represented as sum of any subset of sorted array | Medium | | |
| Count the number of elements from one array less than or equal to elements in another array | Medium | amazon | |
| Kth Smallest Element in a BST | Medium | affirm
amazon
apple
bloomberg
facebook
google
hulu
microsoft
oracle
triplebyte
uber
vmware | |
| Kth smallest absolute difference in array | Medium | | |