Dashboard Questions Topics Companies Sheets

Data Structures & Algorithms

Practice 3,374+ coding problems from top companies. Master DSA concepts and ace your interviews.

3,374

Problems

840

Easy

1762

Medium

772

Hard

Difficulty

All3374 Easy840 Medium1762 Hard772

Title	Solve	Difficulty	Companies	Topics
1603. Design Parking System	Solve	Easy	Amazon	Counting Design+1
1607. Sellers With No Sales	Solve	Easy	-	Database
1608. Special Array With X Elements Greater Than or Equal X	Solve	Easy	Google	Array Binary Search+1
1614. Maximum Nesting Depth of the Parentheses	Solve	Easy	Bloomberg+1	Stack String
1619. Mean of Array After Removing Some Elements	Solve	Easy	Google	Array Sorting
1623. All Valid Triplets That Can Represent a Country	Solve	Easy	Amazon	Database
1624. Largest Substring Between Two Equal Characters	Solve	Easy	Google	Hash Table String
1629. Slowest Key	Solve	Easy	Amazon+1	Array String
1633. Percentage of Users Attended a Contest	Solve	Easy	-	Database
1636. Sort Array by Increasing Frequency	Solve	Easy	Amazon+4	Array Hash Table+1
1637. Widest Vertical Area Between Two Points Containing No Points	Solve	Easy	Microsoft	Array Sorting
1640. Check Array Formation Through Concatenation	Solve	Easy	Facebook	Array Hash Table
1646. Get Maximum in Generated Array	Solve	Easy	-	Array Simulation
1652. Defuse the Bomb	Solve	Easy	-	Array Sliding Window
1656. Design an Ordered Stream	Solve	Easy	Bloomberg	Array Data Stream+2
1661. Average Time of Process per Machine	Solve	Easy	Adobe+6	Database
1662. Check If Two String Arrays are Equivalent	Solve	Easy	Amazon+2	Array String
1667. Fix Names in a Table	Solve	Easy	Adobe	Database
1668. Maximum Repeating Substring	Solve	Easy	Pure Storage	Dynamic Programming String+1
1672. Richest Customer Wealth	Solve	Easy	Adobe	Array Matrix
1677. Product's Worth Over Invoices	Solve	Easy	-	Database
1678. Goal Parser Interpretation	Solve	Easy	Apple	String
1683. Invalid Tweets	Solve	Easy	Adobe+3	Database
1684. Count the Number of Consistent Strings	Solve	Easy	Amazon+1	Array Bit Manipulation+3
1688. Count of Matches in Tournament	Solve	Easy	Adobe+1	Math Simulation
1693. Daily Leads and Partners	Solve	Easy	-	Database
1694. Reformat Phone Number	Solve	Easy	Toptal	String
1700. Number of Students Unable to Eat Lunch	Solve	Easy	Flipkart	Array Queue+2
1704. Determine if String Halves Are Alike	Solve	Easy	Amazon	Counting String
1708. Largest Subarray Length K	Solve	Easy	Google	Array Greedy
1710. Maximum Units on a Truck	Solve	Easy	Amazon+2	Array Greedy+1
1716. Calculate Money in Leetcode Bank	Solve	Easy	edabit	Math
1720. Decode XORed Array	Solve	Easy	Google	Array Bit Manipulation
1725. Number Of Rectangles That Can Form The Largest Square	Solve	Easy	AllinCall	Array
1729. Find Followers Count	Solve	Easy	Tesla+1	Database
1731. The Number of Employees Which Report to Each Employee	Solve	Easy	Amazon+1	Database
1732. Find the Highest Altitude	Solve	Easy	Apple+4	Array Prefix Sum
1736. Latest Time by Replacing Hidden Digits	Solve	Easy	Google	Greedy String
1741. Find Total Time Spent by Each Employee	Solve	Easy	Adobe+1	Database
1742. Maximum Number of Balls in a Box	Solve	Easy	AppDynamics+1	Counting Hash Table+1
1748. Sum of Unique Elements	Solve	Easy	Facebook	Array Counting+1
1752. Check if Array Is Sorted and Rotated	Solve	Easy	Amazon	Array
1757. Recyclable and Low Fat Products	Solve	Easy	Adobe+8	Database
1758. Minimum Changes To Make Alternating Binary String	Solve	Easy	Tesla	String
1763. Longest Nice Substring	Solve	Easy	Microsoft	Bit Manipulation Divide and Conquer+3
1768. Merge Strings Alternately	Solve	Easy	Uber	String Two Pointers
1773. Count Items Matching a Rule	Solve	Easy	Adobe+1	Array String
1777. Product's Price for Each Store	Solve	Easy	Amazon	Database
1779. Find Nearest Point That Has the Same X or Y Coordinate	Solve	Easy	DoorDash	Array
1784. Check if Binary String Has at Most One Segment of Ones	Solve	Easy	Cisco	String