DSA & Coding Problems Explorer

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

8773 problems

#	Title	Topics	Acceptance	Pts	Difficulty
7051	MySQL CONCAT and DATE_FORMAT #37	MySQL — String & date functions mysql coding-practice	—	40	Hard	Solve
7052	PostgreSQL B-tree index #37	PostgreSQL — Indexes & EXPLAIN postgresql coding-practice	—	40	Hard	Solve
7053	T-SQL IDENTITY & FK #37	SQL Server — DDL & constraints sqlserver coding-practice	—	40	Hard	Solve
7054	exceptions exercise #37	C# Programs — Exceptions csharp coding-practice	—	40	Hard	Solve
7055	BFS shortest path in grid #38	DSA — Graphs dsa coding-practice	—	30	Medium	Solve
7056	Map squares #38	JavaScript — ES6+ javascript coding-practice	—	30	Medium	Solve
7057	Map squares #38	Node.js — Async patterns nodejs coding-practice	—	30	Medium	Solve
7058	Map squares #38	React — Interview patterns react coding-practice	—	30	Medium	Solve
7059	MySQL CONCAT and DATE_FORMAT #38	MySQL — String & date functions mysql coding-practice	—	30	Medium	Solve
7060	PostgreSQL B-tree index #38	PostgreSQL — Indexes & EXPLAIN postgresql coding-practice	—	30	Medium	Solve
7061	T-SQL IDENTITY & FK #38	SQL Server — DDL & constraints sqlserver coding-practice	—	30	Medium	Solve
7062	exceptions exercise #38	C# Programs — Exceptions csharp coding-practice	—	30	Medium	Solve
7063	BFS shortest path in grid #39	DSA — Graphs dsa coding-practice	—	30	Medium	Solve
7064	Max in set #39	JavaScript — ES6+ javascript coding-practice	—	20	Easy	Solve
7065	Max in set #39	Node.js — Async patterns nodejs coding-practice	—	20	Easy	Solve
7066	Max in set #39	React — Interview patterns react coding-practice	—	20	Easy	Solve
7067	MySQL CONCAT and DATE_FORMAT #39	MySQL — String & date functions mysql coding-practice	—	30	Medium	Solve
7068	PostgreSQL B-tree index #39	PostgreSQL — Indexes & EXPLAIN postgresql coding-practice	—	30	Medium	Solve
7069	T-SQL IDENTITY & FK #39	SQL Server — DDL & constraints sqlserver coding-practice	—	20	Easy	Solve
7070	exceptions exercise #39	C# Programs — Exceptions csharp coding-practice	—	30	Medium	Solve
7071	BFS shortest path in grid #40	DSA — Graphs dsa coding-practice	—	30	Medium	Solve
7072	MySQL CONCAT and DATE_FORMAT #40	MySQL — String & date functions mysql coding-practice	—	40	Hard	Solve
7073	PostgreSQL B-tree index #40	PostgreSQL — Indexes & EXPLAIN postgresql coding-practice	—	40	Hard	Solve
7074	Reduce product #40	JavaScript — ES6+ javascript coding-practice	—	30	Medium	Solve
7075	Reduce product #40	Node.js — Async patterns nodejs coding-practice	—	30	Medium	Solve
7076	Reduce product #40	React — Interview patterns react coding-practice	—	30	Medium	Solve
7077	T-SQL IDENTITY & FK #40	SQL Server — DDL & constraints sqlserver coding-practice	—	30	Medium	Solve
7078	exceptions exercise #40	C# Programs — Exceptions csharp coding-practice	—	40	Hard	Solve
7079	BFS shortest path in grid #41	DSA — Graphs dsa coding-practice	—	30	Medium	Solve
7080	MySQL CONCAT and DATE_FORMAT #41	MySQL — String & date functions mysql coding-practice	—	30	Medium	Solve
7081	PostgreSQL B-tree index #41	PostgreSQL — Indexes & EXPLAIN postgresql coding-practice	—	30	Medium	Solve
7082	Sum 1..15 #41	JavaScript — ES6+ javascript coding-practice	—	40	Hard	Solve
7083	Sum 1..15 #41	Node.js — Async patterns nodejs coding-practice	—	40	Hard	Solve
7084	Sum 1..15 #41	React — Interview patterns react coding-practice	—	40	Hard	Solve
7085	T-SQL IDENTITY & FK #41	SQL Server — DDL & constraints sqlserver coding-practice	—	40	Hard	Solve
7086	exceptions exercise #41	C# Programs — Exceptions csharp coding-practice	—	30	Medium	Solve
7087	BFS shortest path in grid #42	DSA — Graphs dsa coding-practice	—	30	Medium	Solve
7088	Filter evens #42	JavaScript — ES6+ javascript coding-practice	—	30	Medium	Solve
7089	Filter evens #42	Node.js — Async patterns nodejs coding-practice	—	30	Medium	Solve
7090	Filter evens #42	React — Interview patterns react coding-practice	—	30	Medium	Solve
7091	MySQL CONCAT and DATE_FORMAT #42	MySQL — String & date functions mysql coding-practice	—	30	Medium	Solve
7092	PostgreSQL B-tree index #42	PostgreSQL — Indexes & EXPLAIN postgresql coding-practice	—	30	Medium	Solve
7093	T-SQL IDENTITY & FK #42	SQL Server — DDL & constraints sqlserver coding-practice	—	30	Medium	Solve
7094	exceptions exercise #42	C# Programs — Exceptions csharp coding-practice	—	30	Medium	Solve
7095	BFS shortest path in grid #43	DSA — Graphs dsa coding-practice	—	30	Medium	Solve
7096	Map squares #43	JavaScript — ES6+ javascript coding-practice	—	20	Easy	Solve
7097	Map squares #43	Node.js — Async patterns nodejs coding-practice	—	20	Easy	Solve
7098	Map squares #43	React — Interview patterns react coding-practice	—	20	Easy	Solve
7099	MySQL CONCAT and DATE_FORMAT #43	MySQL — String & date functions mysql coding-practice	—	40	Hard	Solve
7100	PostgreSQL B-tree index #43	PostgreSQL — Indexes & EXPLAIN postgresql coding-practice	—	40	Hard	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