Atlassian

All Topics Algorithms Backend
Design Concurrency Database Database
Design Java Javascript Object Oriented
Design Programming
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Title	Difficulty	Companies
Dice Roll Simulation	Hard	akuna-capital atlassian bloomberg google
Logger Rate Limiter	Easy	amazon apple atlassian bloomberg google linkedin microsoft uber
Random Pick with Weight	Medium	amazon apple atlassian doordash facebook google linkedin microsoft rubrik tripadvisor twitter two-sigma uber wish yelp
Find Leaves of Binary Tree	Medium	amazon atlassian ebay google linkedin pocket-gems
Insert into a Binary Search Tree	Medium	amazon atlassian facebook google microsoft
Palindromic Substrings	Medium	adobe amazon apple atlassian citadel coursera facebook goldman-sachs google linkedin mathworks microsoft pure-storage roblox twitter uber vmware
Maximum Average Subtree	Medium	amazon atlassian
Rank Teams by Votes	Medium	atlassian google
Shortest Distance to a Character	Easy	apple atlassian bloomberg facebook google
Verbal Arithmetic Puzzle	Hard	atlassian
Subarray Product Less Than K	Medium	akuna-capital atlassian coursera expedia google yatra
Lemonade Change	Easy	amazon atlassian
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
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
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
Number of Provinces	Medium	adobe amazon atlassian bloomberg drawbridge ebay facebook goldman-sachs google linkedin microsoft pocket-gems salesforce twitter two-sigma uber
Leaf-Similar Trees	Easy	amazon atlassian facebook google microsoft
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
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
Greatest Common Divisor of Strings	Easy	atlassian capital-one
Backspace String Compare	Easy	amazon atlassian facebook google microsoft oracle uber
Design Hit Counter	Medium	affirm amazon apple atlassian bloomberg bookingcom dropbox google indeed linkedin microsoft netflix oracle pinterest quip snapchat uber visa yahoo zillow
Flatten Nested List Iterator	Medium	airbnb amazon apple atlassian bloomberg ebay facebook google linkedin lyft microsoft oracle pinterest snapchat splunk twitter uber vmware
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
Longest Increasing Subsequence	Medium	adobe amazon apple atlassian ebay facebook google microsoft oracle salesforce uber vmware
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
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
Binary Tree Right Side View	Medium	adobe amazon apple atlassian bloomberg bytedance citadel ebay facebook google mathworks microsoft nvidia oracle paypal sap uber vmware
Diameter Of a Binary Tree	Easy	adobe amazon apple atlassian baidu bloomberg bytedance facebook google intel microsoft oracle qualtrics tencent
Candy distribution	Hard	amazon apple google microsoft salesforce uber atlassian
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
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
Evaluate Reverse Polish Notation	Medium	amazon atlassian facebook google jane-street linkedin microsoft opendoor oracle uber vmware yandex zillow
Subsets 1	Medium	adobe amazon apple atlassian bloomberg bytedance coupang ebay facebook goldman-sachs google lyft microsoft uber yahoo
Next Permutation	Medium	adobe amazon apple atlassian bloomberg bytedance ebay facebook google houzz jpmorgan microsoft quora rubrik samsung sumologic uber
Number of Islands	Medium	adobe affirm alibaba amazon appdynamics apple arista-networks atlassian audible blackrock bloomberg bytedance cisco citadel citrix cohesity cruise-automation doordash ebay electronic-arts evernote expedia facebook godaddy goldman-sachs google houzz hulu jpmorgan linkedin liveramp lyft mathworks microsoft nutanix nvidia oracle palantir-technologies paypal qualtrics roblox salesforce servicenow snapchat splunk spotify square sumologic tableau twitch twitter uber visa vmware wish yahoo zenefits zulily
Best Time To Buy And Sell Stock 3 - at most twice	Hard	amazon apple atlassian bloomberg citadel facebook flipkart google microsoft rubrik two-sigma
Merge Overlapping Intervals	Medium	adobe alibaba amazon apple atlassian bloomberg bytedance cisco cohesity coupang cruise-automation dataminr doordash ebay facebook godaddy goldman-sachs google intuit linkedin microsoft netflix oracle palantir-technologies paypal pinterest postmates salesforce sap servicenow snapchat sumologic tencent twitch twitter two-sigma uber visa vmware wayfair wish yahoo yandex yelp zulily
Single Element in a Sorted Array	Medium	amazon apple atlassian bloomberg facebook google microsoft twitter
Symmetric Binary Tree	Easy	adobe alibaba amazon apple atlassian audible bloomberg facebook google linkedin microsoft oracle salesforce sap tripadvisor twitter uber visa vmware yandex
Single Number 1 - All elements except one occur twice	Easy	adobe airbnb amazon apple atlassian bloomberg facebook google microsoft oracle palantir-technologies tencent
Best Time To Buy And Sell Stock 1 - only one transaction	Easy	adobe akuna-capital alibaba amazon apple atlassian audible blackrock bloomberg bytedance cisco citadel deutsche-bank doordash expedia facebook goldman-sachs google grab groupon intel jpmorgan linkedin lyft microsoft morgan-stanley oracle paypal redfin sap snapchat tableau tencent uber visa vmware yahoo zillow
Permutations of Array 1	Medium	adobe amazon apple atlassian bloomberg bytedance cisco ebay facebook garena godaddy goldman-sachs google linkedin microsoft netease oracle paypal salesforce sap uber vmware yahoo
Letter Combinations of a Phone Number	Medium	amazon apple atlassian bloomberg cisco dropbox ebay facebook goldman-sachs google jpmorgan lyft microsoft morgan-stanley nutanix oracle quip roblox salesforce servicenow square twilio uber vmware yahoo yelp
Binary Search Tree BST Inorder Iterator	Medium	alibaba amazon apple atlassian bloomberg bytedance cisco cloudera ebay facebook google linkedin microsoft oracle qualtrics redfin splunk uber
Valid Palindrome 2	Easy	atlassian facebook google microsoft yahoo
Design HashMap	Easy	adobe amazon apple atlassian dell facebook goldman-sachs google linkedin microsoft nvidia oracle reddit salesforce servicenow tableau twitter uber vmware
Basic Calculator 2 Problem	Medium	airbnb amazon apple atlassian doordash ebay facebook google houzz indeed intuit ixl microsoft oracle paypal postmates reddit snapchat tableau tencent uber