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4301 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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Title	Difficulty	Videos	Companies
Design Browser History	medium	-	bloomberg
Paint House 3	hard	-	paypal
Delete N Nodes After M Nodes of a Linked List	easy	-	microsoft
Final Prices With a Special Discount in a Shop	easy
Subrectangle Queries	medium	-
Find Two Non-overlapping Sub-arrays Each With Target Sum	medium	-	google
Allocate Mailboxes	hard	-	bloomberg
Sales by Day of the Week	hard	-	amazon
Running Sum of 1d Array	easy	-	bloomberg google
Least Number of Unique Integers after K Removals	medium	-
Minimum Number of Days to Make m Bouquets	medium	-	google
Kth Ancestor of a Tree Node	hard	-	google
Group Sold Products By The Date	easy	-
Clone Binary Tree With Random Pointer	medium	-	amazon
XOR Operation in an Array	easy	-
Making File Names Unique	medium	-
Avoid Flood in The City	medium	-	google
Find Critical and Pseudo-Critical Edges in Minimum Spanning Tree	hard	-	amazon
Clone N-ary Tree	medium	-	amazon
Average Salary Excluding the Minimum and Maximum Salary	easy	-	netsuite
The kth Factor of n	medium	-	expedia
Longest Subarray of Ones After Deleting One Element	medium	-	yandex
Parallel Courses II	hard	-	google
Friendly Movies Streamed Last Month	easy	-	amazon
Path Crossing	easy	-	amazon
Check If Array Pairs Are Divisible by k	medium		paypal
Number of Subsequences That Satisfy the Given Sum Condition	medium	-	facebook google
Max Value of Equation	hard	-	google
Design a File Sharing System	medium	-	twitch
Countries You Can Safely Invest In	medium	-
Can Make Arithmetic Progression From Sequence	easy	-	amazon
Last Moment Before All Ants Fall Out of a Plank	medium	-	google
Count Submatrices With All Ones	medium	-	google
Find Root of N-Ary Tree	medium	-	google
Reformat Date	easy	-	twilio
Range Sum of Sorted Subarray Sums	medium		google
Minimum Difference Between Largest and Smallest Value in Three Moves	medium		google
Stone Game IV	hard	-	microsoft
Customer Order Frequency	easy	-	amazon
Number of Good Pairs	easy	-
Number of Substrings With Only 1s	medium	-	google
Path with Maximum Probability	medium		google
Move Sub-Tree of N-Ary Tree	hard	-	google
Find Users With Valid E-Mails Problem	easy	-
Water Bottles	easy	-	microsoft
Number of Nodes in the Sub-Tree With the Same Label	medium	-	samsung
Maximum Number of Non-Overlapping Substrings	hard	-	amazon
Diameter Of a N-Ary Tree	medium	-	facebook google
Count Odd Numbers in an Interval Range	easy	-	microsoft
Number of Sub-arrays With Odd Sum	medium

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