All Problems

36 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)

Filter by Difficulty:

EasyMediumHard

Tag:

Company:

Active filters:Company: alibaba×
TitleDifficultyVideosCompanies
Two Sumeasy
adobeaetionaffirm
Add Two Numbers represented as Linked List in Reversed Ordermedium-
adobeaetionairbnb
Longest Substring Without Repeating Charactersmedium
adobealationalibaba
Median of Two Sorted Arrayshard-
adobeairbnbalibaba
Longest Palindromic Substringmedium
adobeairbnbalibaba
Regular Expression Matchinghard-
adobeairbnbalibaba
Longest Common Prefix in array of stringeasy-
adobealibabaamazon
3Sum0 - Find three elements in an array that sum to a zeromedium
adobeakuna-capitalalibaba
Merge Two Sorted Linked Listseasy
adobeairbnbalibaba
Generate Parenthesesmedium-
adobealibabaamazon
Merge K Sorted Listshard
adobeairbnbalibaba
Return two prime numbers that sum to a given even numbereasy-
alibaba
Search in Rotated Sorted Arraymedium
adobealibabaamazon
Maximum Subarray Summedium
adobealibabaamazon
Merge Overlapping Intervalsmedium
adobealibabaamazon
Unique Paths in Grid 1 - Count all paths moving right or downmedium
adobealibabaamazon
Climbing Stairs - Take atmost 2 Stepseasy
adobealibabaamazon
Binary Tree Inorder Traversaleasy-
alibabaamazonapple
Symmetric Binary Treeeasy-
adobealibabaamazon
Best Time To Buy And Sell Stock 1 - only one transactioneasy
adobeakuna-capitalalibaba
Design LRU Cachemedium-
adobealibabaamazon
Maximum Product Subarraymedium
adobeakuna-capitalalibaba
Intersection of Two Linked Listseasy-
airbnbalibabaamazon
Binary Search Tree BST Inorder Iteratormedium-
alibabaamazonapple
Number of Islandsmedium
adobeaffirmalibaba
Reverse Linked Listeasy
adobealibabaamazon
Kth Largest Element in an Arraymedium-
adobeairbnbalibaba
Sliding Window Maximumhard-
adobealibabaamazon
Decode Stringmedium-
alibabaamazonappdynamics
Arithmetic Slices II - Subsequencehard-
adobealibababaidu
LFU Cachehard-
adobealibabaamazon
Split Array with Equal Sumhard-
alibabafacebook
Split Concatenated Stringsmedium-
alibaba
Path Sum IVmedium-
alibaba
Valid Parenthesis Stringmedium-
alibabaamazonbloomberg
Subarrays with K Different Integershard-
alibabaamazongoldman-sachs