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90 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)
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TitleDifficultyVideosCompanies
Convert String to Integer atoimedium-
adobeamazonapple
Integer To Romanmedium-
adobeamazonapple
Minimum Flips to Separate X and Ymedium-
linkedin
Search in Rotated Sorted Arraymedium
adobealibabaamazon
Find first and last positions of target element in sorted arraymedium-
airbnbamazonapple
Combination Sum 1medium
airbnbakuna-capitalamazon
Combination Sum 2 - Cant Reuse same elementmedium-
adobeamazonapple
Permutations of Array 1medium-
adobeamazonapple
Permutations of Array 2 - Array has duplicatesmedium-
adobeamazonapple
Implement Power Function 1medium-
adobeamazonapple
Maximum Subarray Summedium
adobealibabaamazon
Spiral Matrix 1 - Returnmedium
adobeamazonapple
Merge Overlapping Intervalsmedium
adobealibabaamazon
Insert Intervalmedium
adobeamazonapple
Rotate Linked List to Rightmedium-
adobeairbnbamazon
Edit Distancemedium-
adobeamazonapple
Dutch National Flag DNFmedium
amazonapplebloomberg
Word Search 1 - Find if word existsmedium
adobeamazonapple
Partition Listmedium-
amazonapplelinkedin
Validate Binary Search Treemedium
adobeamazonapple
Binary Tree Level Order Traversal - Level by Levelmedium
adobeamazonapple
Binary Tree Traversal - Zigzag Level Order Traversalmedium-
amazonapplebloomberg
Path Sum 2 - find all root to leaf pathsmedium-
adobeamazonapple
Clone Undirected Graphmedium
amazonapplefacebook
Linked List Cycle 2 - Find Start of a Cyclemedium-
adobeamazonapple
Reorder List such that i-th element points to n-i-th elementmedium
adobeamazonapple
Design LRU Cachemedium-
adobealibabaamazon
Evaluate Reverse Polish Notationmedium-
amazonatlassianfacebook
Maximum Product Subarraymedium
adobeakuna-capitalalibaba
Min Stackmedium-
adobeamazonapple
Binary Tree Upside Downmedium-
googlelinkedin
Binary Search Tree BST Inorder Iteratormedium-
alibabaamazonapple
Repeated DNA Sequencesmedium-
amazonapplegoogle
House Robbermedium
adobeairbnbamazon
Number of Islandsmedium
adobeaffirmalibaba
Course Schedule 1 - Is it Possiblemedium
amazonapplebloomberg
Kth Largest Element in an Arraymedium-
adobeairbnbalibaba
Lowest Common Ancestor of a Binary Search Treemedium
adobeamazonbloomberg
Lowest Common Ancestor of a Binary Treemedium
adobeairbnbamazon
Product of Array Except Selfmedium
adobeamazonapple
Search a 2D Matrix 2 - Rows and columns are sortedmedium-
adobeamazonapple
Shortest Word Distance 2medium-
amazonebaylinkedin
Shortest Word Distance 3medium-
linkedin
Factor Combinationsmedium-
googlelinkedinpinterest
Paint House 1 - N houses with 3 colors with no two adjacent houses with same color colormedium-
applelinkedinmicrosoft
Graph Valid Treemedium-
amazonfacebookgoogle
Find the Celebritymedium-
amazonapplefacebook
Least Number of Perfect Squares that Sums to nmedium-
adobeamazonapple
Sparse Matrix Multiplicationmedium-
amazonapplebloomberg
Coin Change with Fewest Number of Coins Given Infinite Supplymedium
adobeaffirmairbnb
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