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Array (172)Sorting (45)Depth First Search (44)Tree (41)Breadth First Search (35)Linked List (28)Stack (27)Recursion (18)Graph Theory (12)Monotonic Stack (8)Queue (6)Shortest Path (2)

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Title	Difficulty	Videos	Companies
Majority Element - Boyer–Moore majority vote algorithm	easy	-	adobe amazon apple
Majority Element 2 - With n by 3 definition	medium	-	adobe amazon apple
Bulls and Cows	medium	-	airbnb amazon google
Top K Frequent Elements	medium		amazon apple bloomberg
Rearrange String k Distance Apart	hard	-	amazon ebay facebook
Ransom Note	easy	-	amazon apple microsoft
First Unique Character in a String	easy	-	adobe amazon apple
Sort Characters By Frequency	medium	-	amazon bloomberg expedia
Task Scheduler	medium	-	amazon apple bloomberg
Top K Frequent Words	medium	-	adobe amazon apple
Reorganize String	medium	-	amazon apple ebay
Subdomain Visit Count	medium	-	amazon apple citrix
Most Common Word	easy	-	amazon apple google
Uncommon Words from Two Sentences	easy		amazon expedia facebook
RLE Iterator	medium	-	amazon google wish
Subarrays with K Different Integers	hard	-	alibaba amazon goldman-sachs
Pairs of Songs With Total Durations Divisible by 60	medium	-	adobe amazon citrix
Distant Barcodes	medium	-	amazon bloomberg
Delete Nodes And Return Forest	medium		amazon google
Number of Equivalent Domino Pairs	easy	-	amazon
Find Words That Can Be Formed by Characters	easy	-	amazon
Critical Connections in a Network	hard	-	adobe amazon google
Find Smallest Common Element in All Rows	medium	-	amazon microsoft
Split a String in Balanced Strings	easy	-	amazon apple
Count Servers that Communicate	medium		amazon google
Largest Multiple of Three	hard	-	amazon
How Many Numbers Are Smaller Than the Current Number	easy	-	adobe amazon google
Count Number of Teams	medium		amazon goldman-sachs
Customer Order Frequency	easy	-	amazon