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89 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)Database(305)Networking(0)Object Oriented Design(31)Programming Languages(5)System Design(0)Algorithms(3944)

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Title	Difficulty	Videos	Companies
Find the Index of the First Occurrence in a String	easy	-	adobe amazon apple
Two Sum	easy		adobe aetion affirm
Palindrome Number	easy		adobe amazon apple
Roman To Integer	easy		adobe amazon apple
Longest Common Prefix in array of string	easy	-	adobe alibaba amazon
Valid Parentheses	easy		adobe airbnb akuna-capital
Merge Two Sorted Linked Lists	easy		adobe airbnb alibaba
Remove duplicates from Sorted Array 1	easy		adobe amazon apple
Remove Element	easy		amazon bloomberg google
Search Insert Position in sorted array	easy	-	adobe amazon apple
Plus One 1 - Given number as array plus one	easy	-	adobe amazon apple
Square root of an integer	easy	-	amazon apple bloomberg
Climbing Stairs - Take atmost 2 Steps	easy		adobe alibaba amazon
Merge Two Sorted Arrays	easy	-	adobe amazon apple
Binary Tree Inorder Traversal	easy	-	alibaba amazon apple
Same Tree	easy		amazon apple bloomberg
Symmetric Binary Tree	easy	-	adobe alibaba amazon
Maximum Depth of Binary Tree	easy		adobe amazon apple
Convert Sorted Array to height-balanced Binary Search Tree	easy		airbnb amazon apple
Balanced Binary Tree	easy	-	adobe amazon apple
Path Sum 1 - Check if root to leaf path exists	easy	-	adobe amazon apple
Pascal’s Triangle 1 - Generate first n rows	easy	-	adobe amazon apple
Best Time To Buy And Sell Stock 1 - only one transaction	easy		adobe akuna-capital alibaba
Valid Palindrome	easy		adobe amazon apple
Single Number 1 - All elements except one occur twice	easy		adobe airbnb amazon
Linked List Cycle 1 - Detect Cycle	easy		adobe amazon apple
Binary Tree Preorder Traversal	easy	-	amazon bloomberg cisco
Intersection of Two Linked Lists	easy	-	airbnb alibaba amazon
Excel Sheet Column Number	easy	-	amazon apple bloomberg
Happy Number	easy	-	adobe airbnb amazon
Remove Linked List Elements	easy	-	adobe amazon apple
Isomorphic Strings	easy		adobe amazon bloomberg
Reverse Linked List	easy		adobe alibaba amazon
Contains Duplicate 1 - Check if array has duplicates	easy		adobe airbnb amazon
Contains Duplicate 2 - within k distance	easy	-	adobe airbnb amazon
Count Complete Tree Nodes	easy	-	amazon bloomberg bytedance
Implement stack using queues	easy	-	amazon bloomberg citadel
Invert Binary Tree	easy		amazon apple bloomberg
Summary Ranges	easy	-	amazon bloomberg capital-one
Implement Queue using Stacks	easy	-	amazon apple bloomberg
Palindrome Linked List	easy	-	adobe amazon apple
Valid Anagram	easy		amazon apple bloomberg
Meeting Rooms 1 - Can person attend all meetings	easy		amazon bloomberg facebook
Add Digits in Number	easy	-	adobe apple bloomberg
Palindrome Permutation	easy	-	amazon apple bloomberg
Missing Number	easy		adobe amazon apple
Closest Binary Search Tree Value	easy	-	amazon bloomberg facebook
First Bad Version	easy	-	adobe amazon bloomberg
Move Zeroes at the end of array	easy	-	adobe amazon apple
Nim Game	easy	-	adobe bloomberg

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