coding-practice Coding Problems

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

6523 problems in this topic

#	Title	Topics	Acceptance	Pts	Difficulty
3201	Uppercase "toolliyo" #47	C# Programs — Strings csharp coding-practice	—	20	Easy	Solve
3202	Valid parentheses depth #47	DSA — Stacks & Queues dsa coding-practice	—	20	Easy	Solve
3203	Above average #48	SQL — Subqueries sql coding-practice	—	30	Medium	Solve
3204	Map squares #48	React — useEffect react coding-practice	—	30	Medium	Solve
3205	Map squares #48	JavaScript — Objects javascript coding-practice	—	30	Medium	Solve
3206	Map squares #48	Node.js — Express patterns nodejs coding-practice	—	30	Medium	Solve
3207	MongoDB relationships #48	MongoDB — Embedding vs referencing mongodb coding-practice	—	30	Medium	Solve
3208	MySQL subquery above avg #48	MySQL — Subqueries mysql coding-practice	—	30	Medium	Solve
3209	PostgreSQL CTE top earners #48	PostgreSQL — Subqueries & CTEs postgresql coding-practice	—	30	Medium	Solve
3210	Queue — simulate task scheduler #48	DSA — Stacks & Queues dsa coding-practice	—	30	Medium	Solve
3211	String length manual "developer" #48	C# Programs — Strings csharp coding-practice	—	20	Easy	Solve
3212	T-SQL subquery above average #48	SQL Server — Subqueries sqlserver coding-practice	—	30	Medium	Solve
3213	Above average #49	SQL — Subqueries sql coding-practice	—	40	Hard	Solve
3214	Max in set #49	React — useEffect react coding-practice	—	40	Hard	Solve
3215	Max in set #49	Node.js — Express patterns nodejs coding-practice	—	40	Hard	Solve
3216	Max in set #49	JavaScript — Objects javascript coding-practice	—	40	Hard	Solve
3217	MongoDB relationships #49	MongoDB — Embedding vs referencing mongodb coding-practice	—	30	Medium	Solve
3218	MySQL subquery above avg #49	MySQL — Subqueries mysql coding-practice	—	40	Hard	Solve
3219	PostgreSQL CTE top earners #49	PostgreSQL — Subqueries & CTEs postgresql coding-practice	—	40	Hard	Solve
3220	Reverse "code" #49	C# Programs — Strings csharp coding-practice	—	20	Easy	Solve
3221	T-SQL subquery above average #49	SQL Server — Subqueries sqlserver coding-practice	—	40	Hard	Solve
3222	Valid parentheses depth #49	DSA — Stacks & Queues dsa coding-practice	—	20	Easy	Solve
3223	Above average #50	SQL — Subqueries sql coding-practice	—	30	Medium	Solve
3224	Count vowels in "practice" #50	C# Programs — Strings csharp coding-practice	—	20	Easy	Solve
3225	MongoDB relationships #50	MongoDB — Embedding vs referencing mongodb coding-practice	—	30	Medium	Solve
3226	MySQL subquery above avg #50	MySQL — Subqueries mysql coding-practice	—	30	Medium	Solve
3227	PostgreSQL CTE top earners #50	PostgreSQL — Subqueries & CTEs postgresql coding-practice	—	30	Medium	Solve
3228	Queue — simulate task scheduler #50	DSA — Stacks & Queues dsa coding-practice	—	30	Medium	Solve
3229	Reduce product #50	JavaScript — Objects javascript coding-practice	—	30	Medium	Solve
3230	Reduce product #50	Node.js — Express patterns nodejs coding-practice	—	30	Medium	Solve
3231	Reduce product #50	React — useEffect react coding-practice	—	30	Medium	Solve
3232	T-SQL subquery above average #50	SQL Server — Subqueries sqlserver coding-practice	—	30	Medium	Solve
3233	T-SQL subquery above average #51	SQL Server — Subqueries sqlserver coding-practice	—	20	Easy	Solve
3234	Uppercase "interview" #51	C# Programs — Strings csharp coding-practice	—	20	Easy	Solve
3235	Valid parentheses depth #51	DSA — Stacks & Queues dsa coding-practice	—	20	Easy	Solve
3236	Queue — simulate task scheduler #52	DSA — Stacks & Queues dsa coding-practice	—	30	Medium	Solve
3237	String length manual "csharp" #52	C# Programs — Strings csharp coding-practice	—	20	Easy	Solve
3238	T-SQL subquery above average #52	SQL Server — Subqueries sqlserver coding-practice	—	30	Medium	Solve
3239	Reverse "toolliyo" #53	C# Programs — Strings csharp coding-practice	—	20	Easy	Solve
3240	T-SQL subquery above average #53	SQL Server — Subqueries sqlserver coding-practice	—	40	Hard	Solve
3241	Valid parentheses depth #53	DSA — Stacks & Queues dsa coding-practice	—	20	Easy	Solve
3242	Count vowels in "developer" #54	C# Programs — Strings csharp coding-practice	—	20	Easy	Solve
3243	Queue — simulate task scheduler #54	DSA — Stacks & Queues dsa coding-practice	—	30	Medium	Solve
3244	T-SQL subquery above average #54	SQL Server — Subqueries sqlserver coding-practice	—	30	Medium	Solve
3245	T-SQL subquery above average #55	SQL Server — Subqueries sqlserver coding-practice	—	20	Easy	Solve
3246	Uppercase "code" #55	C# Programs — Strings csharp coding-practice	—	20	Easy	Solve
3247	Valid parentheses depth #55	DSA — Stacks & Queues dsa coding-practice	—	20	Easy	Solve
3248	Queue — simulate task scheduler #56	DSA — Stacks & Queues dsa coding-practice	—	30	Medium	Solve
3249	String length manual "practice" #56	C# Programs — Strings csharp coding-practice	—	20	Easy	Solve
3250	T-SQL subquery above average #56	SQL Server — Subqueries sqlserver 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