Title Difficulty Companies Videos
Largest Rectangle in Histogram Hard adobe amazon bloomberg facebook flipkart google microsoft twitter
Least Number of Perfect Squares that Sums to n Medium adobe amazon apple cisco ebay facebook godaddy google grammarly linkedin lyft microsoft uber yandex
Longest Palindrome Easy amazon google intuit
Max Chunks To Make Sorted 2 Problem Hard google microsoft
Maximum Size Subarray Sum equals K Medium amazon facebook google microsoft palantir-technologies
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
Minimum Insertion Steps to Make a String Palindrome Problem Hard bloomberg google quora
My Calendar 2 Problem Medium amazon google
Odd Even Linked List - Bring odd nodes first and even later Medium amazon bloomberg capital-one ebay facebook google microsoft
Paint House 2 - N houses with k colors with no two adjacent houses with same color Hard facebook google linkedin snapchat
Palindrome Pairs Hard airbnb amazon apple bloomberg facebook google square uber
Palindrome Permutation Easy amazon apple bloomberg facebook google microsoft uber
Partition to K Equal Sum Subsets Problem Medium amazon bytedance ebay facebook google houzz linkedin microsoft pinterest vmware
Pascal’s Triangle 2 - Return nth row Easy amazon goldman-sachs google oracle qualtrics
Peeking Iterator Medium amazon apple atlassian ebay facebook google microsoft oracle yahoo
Populate next pointer to right node in Binary Tree Medium amazon bloomberg facebook google microsoft oracle
Range Sum Query – Mutable Medium amazon facebook google twitter
Range Sum Query 2D - Immutable Medium amazon apple cruise-automation facebook google houzz lyft microsoft vmware
Reconstruct Itinerary Problem Hard amazon apple bloomberg citadel facebook goldman-sachs google microsoft qualtrics snapchat square twilio uber yandex yelp
Remove Invalid Parentheses Problem Hard amazon apple bloomberg facebook google houzz ponyai postmates uber
Remove K Digits Problem Medium adobe amazon bloomberg bytedance didi facebook google microsoft nutanix oracle snapchat vmware
Remove Outermost Parentheses Problem Easy apple facebook google
Reverse Bits Easy airbnb amazon apple facebook google samsung tencent
Reverse Words in a String 2 Medium amazon google microsoft uber vmware
Rotate n x n matrix by 90 degrees Medium adobe akuna-capital amazon apple bloomberg cisco facebook google groupon houzz lyft microsoft nvidia palantir palantir-technologies quora salesforce uber wish yandex
Search in Rotated Sorted Array 2 - Check if number exists - Duplicates allowed Medium adobe amazon bloomberg facebook google microsoft
Serialize and Deserialize Binary Tree Hard amazon apple bloomberg citadel ebay expedia facebook google groupon indeed linkedin microsoft oracle qualtrics quora salesforce snapchat tableau uber vmware yahoo
Shortest Palindrome 1 - Prepending characters Hard adobe amazon bloomberg facebook google microsoft oracle pocket-gems
Sort Characters By Frequency Medium amazon bloomberg expedia facebook google linkedin uber
Spiral Matrix 1 - Return Medium adobe amazon apple bloomberg bytedance cisco drawbridge ebay epic-systems facebook goldman-sachs google hulu linkedin microsoft oracle paypal quip robinhood snapchat uber visa
Square root of an integer Easy amazon apple bloomberg facebook google huawei linkedin lyft microsoft qualtrics uber wayfair
Strobogrammatic Number 1 - Check if strobogrammatic Easy cisco facebook google
Strobogrammatic Number 2 - Generate for length n Medium cisco facebook google twitter
Strobogrammatic Number 3 - Count in Range Hard facebook google
Student Attendance Record 1 Problem Easy google
Student Attendance Record 2 Problem Hard google uber
Sudoku Solver Problem Hard adobe amazon apple arista-networks doordash dropbox expedia facebook google microsoft oracle riot-games roblox snapchat uber vmware wish
Swap Nodes in Pairs Medium adobe amazon apple bloomberg ebay facebook google lyft microsoft oracle sap uber
Valid Number Problem Hard adobe amazon apple facebook google linkedin microsoft tripadvisor
Valid Parenthesis String Medium alibaba amazon bloomberg facebook google
Valid Sudoku Problem Medium adobe amazon apple bloomberg cruise-automation doordash facebook google microsoft oracle pinterest roblox salesforce snapchat twitter uber vmware
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
Word Break 2 - Construct a sentence Hard amazon apple audible bloomberg bookingcom dropbox ebay facebook google microsoft oracle pinterest snapchat twitter uber zillow
Zigzag Iterator Medium amazon apple cruise-automation facebook google microsoft yandex
Validate IP Address Problem Medium amazon cisco facebook google microsoft twitter uber
Encode String with Shortest Length Problem Hard google
Magical String Problem Medium google
Sliding Window Median Hard amazon apple facebook google microsoft snapchat spotify
Permutation in String Problem Medium amazon bloomberg facebook google lyft microsoft uber yahoo yandex
Time Needed to Inform All Employees Medium google