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440 problems total

Array (1905)Sorting (440)Depth First Search (316)Database (301)Breadth First Search (241)Tree (240)Stack (172)Graph Theory (169)Linked List (81)Monotonic Stack (67)Queue (50)Recursion (48)Shortest Path (33)
All Topics(4301)Algorithms(3944)Database(305)Networking(0)Object Oriented Design(31)Programming Languages(5)System Design(0)

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TitleDifficultyVideosCompanies
Array With Elements Not Equal to Average of Neighborsmedium-
Car Poolingmedium-
Choose K Elements With Maximum Summedium-
Count Covered Buildingsmedium-
Count Mentions Per Usermedium-
Eat Pizzas!medium-
3Sum0 - Find three elements in an array that sum to a zeromedium
adobeakuna-capitalalibaba
3Sum - Closestmedium-
adobeamazonapple
4Summedium-
adobeamazonapple
Maximize Profit from Task Assignmentmedium-
Maximum and Minimum Sums of at Most Size K Subsequencesmedium-
Maximum Area Rectangle With Point Constraints Imedium-
Maximum Area Rectangle With Point Constraints IIhard-
Maximum Coins From K Consecutive Bagsmedium-
Maximum Product of Two Digitseasy-
Maximum Product of Two Elements in an Arrayeasy-
Maximum Score of Non-overlapping Intervalshard-
Maximum Sum of Edge Values in a Graphhard-
Maximum Sum With at Most K Elementsmedium-
Minimum Cost to Make Arrays Identicalmedium-
Minimum Deletions for At Most K Distinct Characterseasy-
Minimum Difference Between Highest and Lowest of K Scoreseasy-
Path Existence Queries in a Graph IIhard-
Phone Number Prefixeasy-
Select K Disjoint Special Substringsmedium-
Smallest Palindromic Rearrangement Imedium-
Smallest String With Swapsmedium-
Group Anagramsmedium
adobeaffirmamazon
Merge Overlapping Intervalsmedium
adobealibabaamazon
Transform Array by Parityeasy-
Dutch National Flag DNFmedium
amazonapplebloomberg
Merge Two Sorted Arrayseasy-
adobeamazonapple
Insertion Sort on Listmedium-
bloomberggooglemicrosoft
Sort a Linked Listmedium-
adobeamazonbytedance
Maximum Gapmedium-
amazon
Majority Element - Boyer–Moore majority vote algorithmeasy-
adobeamazonapple
Largest Number From Given Numbersmedium
amazonapplebytedance
Kth Largest Element in an Arraymedium-
adobeairbnbalibaba
Contains Duplicate 1 - Check if array has duplicateseasy
adobeairbnbamazon
Contains Duplicate 3 - within k distance and t differencehard-
adobeairbnbapple
Majority Element 2 - With n by 3 definitionmedium-
adobeamazonapple
Valid Anagrameasy
amazonapplebloomberg
Meeting Rooms 1 - Can person attend all meetingseasy
amazonbloombergfacebook
Maximum Intervals Overlap Countmedium
amazonappleatlassian
3Sum Smallermedium-
googleibmmathworks
Missing Numbereasy
adobeamazonapple
H-Indexmedium-
adobebloombergfacebook
Wiggle Sort 1medium-
airbnbamazonfacebook
Find Median from Data Streamhard
adobeamazonapple
Best Meeting Pointhard-
amazonfacebookgoogle
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