DSA & Coding Problems Explorer

All C# Programs — Data Structures 167 DSA — Graphs 105 DSA — Stacks & Queues 105 DSA — Arrays 105 DSA — Hashing 105 DSA — Dynamic Programming 105 DSA — Two Pointers 105 DSA — Trees 105 DSA — Binary Search 105 C# Programs — Strings 105 DSA — Sorting 105 C# Programs — Arrays 105 DSA — Strings 105 C# Programs — LINQ 104 C# Programs — Collections 103 C# Programs — OOP 103 C# Programs — Sorting 103 SQL Server — JOINs 101 SQL Server — Window functions 101 SQL Server — Subqueries 101 SQL Server — CTEs 101 SQL Server — Indexes & plans 101 SQL Server — T-SQL procedures 101 SQL Server — WHERE & filtering 101 SQL Server — DDL & constraints 101 SQL Server — Aggregates & GROUP BY 101 C# Programs — Inheritance 101 SQL Server — SELECT basics 101

8773 problems

#	Title	Topics	Acceptance	Pts	Difficulty
2601	Sum 1..5 #16	Basic JavaScript Programs javascript coding-practice	—	30	Medium	Solve
2602	Sum 1..5 #16	Basic Node.js Programs nodejs coding-practice	—	30	Medium	Solve
2603	Sum 1..5 #16	React — Components & JSX react coding-practice	—	30	Medium	Solve
2604	Sum of first 20 natural numbers	Basic C# Programs csharp coding-practice	—	20	Easy	Solve
2605	T-SQL SELECT TOP 3 by salary #16	SQL Server — SELECT basics sqlserver coding-practice	—	30	Medium	Solve
2606	Factorial of 21	Basic C# Programs csharp coding-practice	—	30	Medium	Solve
2607	Filter evens #17	Basic JavaScript Programs javascript coding-practice	—	40	Hard	Solve
2608	Filter evens #17	Basic Node.js Programs nodejs coding-practice	—	40	Hard	Solve
2609	Filter evens #17	React — Components & JSX react coding-practice	—	40	Hard	Solve
2610	MongoDB queries #17	MongoDB — Queries mongodb coding-practice	—	30	Medium	Solve
2611	MySQL SELECT top earners #17	MySQL — SELECT basics mysql coding-practice	—	30	Medium	Solve
2612	PostgreSQL SELECT with LIMIT #17	PostgreSQL — SELECT basics postgresql coding-practice	—	30	Medium	Solve
2613	Product of array except self #17	DSA — Arrays dsa coding-practice	—	30	Medium	Solve
2614	Select price > 260 #17	SQL — SELECT basics sql coding-practice	—	30	Medium	Solve
2615	T-SQL SELECT TOP 4 by salary #17	SQL Server — SELECT basics sqlserver coding-practice	—	40	Hard	Solve
2616	Check if 19 is prime	Basic C# Programs csharp coding-practice	—	30	Medium	Solve
2617	Map squares #18	Basic JavaScript Programs javascript coding-practice	—	30	Medium	Solve
2618	Map squares #18	Basic Node.js Programs nodejs coding-practice	—	30	Medium	Solve
2619	Map squares #18	React — Components & JSX react coding-practice	—	30	Medium	Solve
2620	MongoDB queries #18	MongoDB — Queries mongodb coding-practice	—	30	Medium	Solve
2621	MySQL SELECT top earners #18	MySQL — SELECT basics mysql coding-practice	—	30	Medium	Solve
2622	PostgreSQL SELECT with LIMIT #18	PostgreSQL — SELECT basics postgresql coding-practice	—	30	Medium	Solve
2623	Product of array except self #18	DSA — Arrays dsa coding-practice	—	30	Medium	Solve
2624	Select price > 270 #18	SQL — SELECT basics sql coding-practice	—	30	Medium	Solve
2625	T-SQL SELECT TOP 5 by salary #18	SQL Server — SELECT basics sqlserver coding-practice	—	30	Medium	Solve
2626	First 7 Fibonacci numbers	Basic C# Programs csharp coding-practice	—	30	Medium	Solve
2627	Max in set #19	Basic JavaScript Programs javascript coding-practice	—	20	Easy	Solve
2628	Max in set #19	Basic Node.js Programs nodejs coding-practice	—	20	Easy	Solve
2629	Max in set #19	React — Components & JSX react coding-practice	—	20	Easy	Solve
2630	MongoDB queries #19	MongoDB — Queries mongodb coding-practice	—	30	Medium	Solve
2631	MySQL SELECT top earners #19	MySQL — SELECT basics mysql coding-practice	—	40	Hard	Solve
2632	PostgreSQL SELECT with LIMIT #19	PostgreSQL — SELECT basics postgresql coding-practice	—	40	Hard	Solve
2633	Product of array except self #19	DSA — Arrays dsa coding-practice	—	30	Medium	Solve
2634	Select price > 280 #19	SQL — SELECT basics sql coding-practice	—	40	Hard	Solve
2635	T-SQL SELECT TOP 6 by salary #19	SQL Server — SELECT basics sqlserver coding-practice	—	20	Easy	Solve
2636	Count evens from 1 to 24	Basic C# Programs csharp coding-practice	—	20	Easy	Solve
2637	MongoDB queries #20	MongoDB — Queries mongodb coding-practice	—	30	Medium	Solve
2638	MySQL SELECT top earners #20	MySQL — SELECT basics mysql coding-practice	—	30	Medium	Solve
2639	PostgreSQL SELECT with LIMIT #20	PostgreSQL — SELECT basics postgresql coding-practice	—	30	Medium	Solve
2640	Product of array except self #20	DSA — Arrays dsa coding-practice	—	30	Medium	Solve
2641	Reduce product #20	Basic JavaScript Programs javascript coding-practice	—	30	Medium	Solve
2642	Reduce product #20	Basic Node.js Programs nodejs coding-practice	—	30	Medium	Solve
2643	Reduce product #20	React — Components & JSX react coding-practice	—	30	Medium	Solve
2644	Select price > 290 #20	SQL — SELECT basics sql coding-practice	—	30	Medium	Solve
2645	T-SQL SELECT TOP 7 by salary #20	SQL Server — SELECT basics sqlserver coding-practice	—	30	Medium	Solve
2646	GCD of 5 and 12	Basic C# Programs csharp coding-practice	—	30	Medium	Solve
2647	MongoDB queries #21	MongoDB — Queries mongodb coding-practice	—	30	Medium	Solve
2648	MySQL SELECT top earners #21	MySQL — SELECT basics mysql coding-practice	—	30	Medium	Solve
2649	PostgreSQL SELECT with LIMIT #21	PostgreSQL — SELECT basics postgresql coding-practice	—	30	Medium	Solve
2650	Product of array except self #21	DSA — Arrays dsa coding-practice	—	30	Medium	Solve

Problem of the day

Combination Sum II

Medium · +15 pts

Solve today

Weekly leaderboard

View all

1 Pratik Chopade 1 solved

Company sheets

Toolliyo unique — practice by hiring company.

Google Amazon Microsoft Meta Apple Netflix TikTok LinkedIn Nvidia Uber

Browse all companies

Interview path

DSA Interview 150 All roadmaps 3,700+ Interview Q&A

Problems explorer