All Problems

15 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
Design log Order recordseasy-
twitteramazon
Two Sumeasy
adobeaetionaffirm
Valid Parentheseseasy
adobeairbnbakuna-capital
Permutation of Array using given ordereasy-
twitter
Symmetric Binary Treeeasy-
adobealibabaamazon
Pascal’s Triangle 1 - Generate first n rowseasy-
adobeamazonapple
Majority Element - Boyer–Moore majority vote algorithmeasy-
adobeamazonapple
Happy Numbereasy-
adobeairbnbamazon
Reverse Linked Listeasy
adobealibabaamazon
Moving Average of Last N numbers in a Streameasy-
amazonappdynamicsbloomberg
License Key Formattingeasy-
googletwitter
Next Greater Element 1easy-
amazonbloombergfacebook
Customer Placing the Largest Number of Orders Problemeasy-
amazontwitter
Design HashMapeasy-
adobeamazonapple
Binary Gapeasy-
ebaytwitter