All Problems

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
Replace All ?'s to Avoid Consecutive Repeating Characters	easy	-
Number of Ways Where Square of Number Is Equal to Product of Two Numbers	medium	-
Minimum Time to Make Rope Colorful	medium	-
Remove Max Number of Edges to Keep Graph Fully Traversable	hard	-
Put Boxes Into the Warehouse II	medium	-
Customer Who Visited but Did Not Make Any Transactions	easy	-
Special Positions in a Binary Matrix	easy	-
Count Unhappy Friends	medium	-
Min Cost to Connect All Points	medium	-
Check If String Is Transformable With Substring Sort Operations	hard	-
Binary Search Tree Iterator II	medium	-
Bank Account Summary II	easy	-
Sum of All Odd Length Subarrays	easy	-
Maximum Sum Obtained of Any Permutation	medium	-
Make Sum Divisible by P	medium	-
Strange Printer II	hard	-
Rearrange Spaces Between Words	easy	-
Split a String Into the Max Number of Unique Substrings	medium
Maximum Non Negative Product in a Matrix	medium	-
Minimum Cost to Connect Two Groups of Points	hard	-
The Most Frequently Ordered Products for Each Customer	medium	-
Build Binary Expression Tree From Infix Expression	hard	-
Crawler Log Folder	easy
Maximum Profit of Operating a Centennial Wheel	medium	-
Throne Inheritance	medium	-
Maximum Number of Achievable Transfer Requests	hard	-
Find Nearest Right Node in Binary Tree	medium	-
Design Parking System	easy	-
Alert Using Same Key-Card Three or More Times in a One Hour Period	medium	-
Find Valid Matrix Given Row and Column Sums	medium
Find Servers That Handled Most Number of Requests	hard	-
Sellers With No Sales	easy	-
Special Array With X Elements Greater Than or Equal X	easy
Even Odd Tree	medium	-
Maximum Number of Visible Points	hard	-
Minimum One Bit Operations to Make Integers Zero	hard	-
Check If Two Expression Trees are Equivalent	medium	-
Find the Missing IDs	medium	-
Maximum Nesting Depth of the Parentheses	easy	-
Maximal Network Rank	medium	-
Count Subtrees With Max Distance Between Cities	hard	-
Maximum Font to Fit a Sentence in a Screen	medium	-
Mean of Array After Removing Some Elements	easy	-
Coordinate With Maximum Network Quality	medium	-
Number of Sets of K Non-Overlapping Line Segments	medium	-
All Valid Triplets That Can Represent a Country	easy	-
Largest Substring Between Two Equal Characters	easy	-
Lexicographically Smallest String After Applying Operations	medium	-
Best Team With No Conflicts	medium	-
Graph Connectivity With Threshold	hard	-

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