Title Difficulty Companies Videos
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 Outermost Parentheses Problem Easy apple facebook google
Reverse Bits Easy airbnb amazon apple facebook google samsung tencent
Reverse Words in a String 3 Easy amazon apple bloomberg microsoft paypal salesforce snapchat yahoo zappos
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
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
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
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
Unique BSTs 2 - Generate Medium adobe amazon apple facebook microsoft yahoo
Valid Number Problem Hard adobe amazon apple facebook google linkedin microsoft tripadvisor
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
Implement Rand10() Using Rand7() Medium apple bloomberg bytedance linkedin microsoft
Most Common Word Problem Easy amazon apple google microsoft oracle
Max Area of Island Problem Medium adobe affirm amazon apple bloomberg bytedance cruise-automation doordash facebook google intuit mathworks microsoft oracle palantir-technologies qualtrics twitch uber wish zillow
Sum of Subarray Minimums Problem Medium apple hulu microsoft
Subarray Sum Equals K Medium adobe amazon apple bloomberg ebay expedia facebook goldman-sachs google indeed linkedin microsoft oracle quora snapchat twilio uber wish yahoo yandex
Island Perimeter Problem Easy amazon apple bloomberg facebook google microsoft
Flatten a Multilevel Doubly Linked List Problem Medium amazon apple bloomberg facebook google microsoft uber
Add Strings Problem Easy adobe airbnb amazon apple bloomberg bytedance facebook google microsoft nvidia oracle snapchat square
Trapping Rain Water 2 Hard amazon apple bytedance facebook google microsoft twitter
Binary Watch Problem Easy apple google
Daily Temperatures Medium adobe amazon apple bloomberg cisco expedia facebook goldman-sachs google linkedin microsoft nvidia uber zillow
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
Find the Index of the First Occurrence in a String Easy adobe amazon apple bloomberg citadel dropbox ebay facebook google microsoft oracle paypal pocket-gems vmware yahoo yandex
Time Based Key-Value Store Problem Medium amazon apple atlassian databricks facebook flexport google linkedin lyft microsoft netflix oracle square stripe sumologic twitter uber vmware zillow
Sparse Matrix Multiplication Medium amazon apple bloomberg facebook google linkedin microsoft snapchat uber
Find Duplicate File in System Problem Medium amazon apple dropbox facebook google microsoft oracle vmware
Most Frequent Subtree Sum Medium amazon apple
Toeplitz Matrix Easy apple facebook google
Longest Univalue Path Medium amazon apple google
Minimum Moves to Equal Array Elements Medium amazon apple coursera drawbridge indeed
Design Hit Counter Medium affirm amazon apple atlassian bloomberg bookingcom dropbox google indeed linkedin microsoft netflix oracle pinterest quip snapchat uber visa yahoo zillow
Reorganize String Problem Medium amazon apple ebay facebook google microsoft oracle qualtrics tesla twitch twitter uber ibm
01 Matrix Medium amazon apple google uber
Flatten Nested List Iterator Problem Medium airbnb amazon apple atlassian bloomberg ebay facebook google linkedin lyft microsoft oracle pinterest snapchat splunk twitter uber vmware
Android Unlock Patterns Problem Medium amazon apple bytedance google microsoft uber
Intersection of Two Arrays 2 - Duplicates allowed Easy amazon apple bloomberg bytedance databricks facebook google linkedin microsoft oracle salesforce uber yandex
Intersection of Two Arrays 1 - Unique Elements Easy amazon apple bloomberg bytedance facebook google indeed jpmorgan linkedin lyft microsoft oracle two-sigma uber yelp
Design Tic-Tac-Toe Problem Medium amazon apple bloomberg doordash facebook google microsoft salesforce triplebyte uber
Largest Binary Search Tree BST Subtree Medium amazon apple facebook google lyft microsoft
Minimum Height Trees Medium amazon apple bloomberg facebook google snapchat
Remove Duplicate Letters Problem Medium adobe amazon apple bytedance facebook google microsoft nutanix yahoo
Longest Consecutive Sequence Medium adobe amazon apple bloomberg facebook google microsoft nutanix oracle paypal spotify uber wish