coding-practice Coding Problems

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

6523 problems in this topic

#	Title	Topics	Acceptance	Pts	Difficulty
2751	Queue — simulate task scheduler #2	DSA — Stacks & Queues dsa coding-practice	—	30	Medium	Solve
2752	T-SQL subquery above average #2	SQL Server — Subqueries sqlserver coding-practice	—	30	Medium	Solve
2753	Above average #3	SQL — Subqueries sql coding-practice	—	30	Medium	Solve
2754	Map squares #3	JavaScript — Objects javascript coding-practice	—	20	Easy	Solve
2755	Map squares #3	React — useEffect react coding-practice	—	20	Easy	Solve
2756	Map squares #3	Node.js — Express patterns nodejs coding-practice	—	20	Easy	Solve
2757	MongoDB relationships #3	MongoDB — Embedding vs referencing mongodb coding-practice	—	30	Medium	Solve
2758	MySQL subquery above avg #3	MySQL — Subqueries mysql coding-practice	—	30	Medium	Solve
2759	PostgreSQL CTE top earners #3	PostgreSQL — Subqueries & CTEs postgresql coding-practice	—	30	Medium	Solve
2760	T-SQL subquery above average #3	SQL Server — Subqueries sqlserver coding-practice	—	20	Easy	Solve
2761	Uppercase "interview" #3	C# Programs — Strings csharp coding-practice	—	20	Easy	Solve
2762	Valid parentheses depth #3	DSA — Stacks & Queues dsa coding-practice	—	20	Easy	Solve
2763	Above average #4	SQL — Subqueries sql coding-practice	—	40	Hard	Solve
2764	Max in set #4	JavaScript — Objects javascript coding-practice	—	30	Medium	Solve
2765	Max in set #4	React — useEffect react coding-practice	—	30	Medium	Solve
2766	Max in set #4	Node.js — Express patterns nodejs coding-practice	—	30	Medium	Solve
2767	MongoDB relationships #4	MongoDB — Embedding vs referencing mongodb coding-practice	—	30	Medium	Solve
2768	MySQL subquery above avg #4	MySQL — Subqueries mysql coding-practice	—	40	Hard	Solve
2769	PostgreSQL CTE top earners #4	PostgreSQL — Subqueries & CTEs postgresql coding-practice	—	40	Hard	Solve
2770	Queue — simulate task scheduler #4	DSA — Stacks & Queues dsa coding-practice	—	30	Medium	Solve
2771	String length manual "csharp" #4	C# Programs — Strings csharp coding-practice	—	20	Easy	Solve
2772	T-SQL subquery above average #4	SQL Server — Subqueries sqlserver coding-practice	—	30	Medium	Solve
2773	Above average #5	SQL — Subqueries sql coding-practice	—	30	Medium	Solve
2774	MongoDB relationships #5	MongoDB — Embedding vs referencing mongodb coding-practice	—	30	Medium	Solve
2775	MySQL subquery above avg #5	MySQL — Subqueries mysql coding-practice	—	30	Medium	Solve
2776	PostgreSQL CTE top earners #5	PostgreSQL — Subqueries & CTEs postgresql coding-practice	—	30	Medium	Solve
2777	Reduce product #5	JavaScript — Objects javascript coding-practice	—	40	Hard	Solve
2778	Reduce product #5	React — useEffect react coding-practice	—	40	Hard	Solve
2779	Reduce product #5	Node.js — Express patterns nodejs coding-practice	—	40	Hard	Solve
2780	Reverse "toolliyo" #5	C# Programs — Strings csharp coding-practice	—	20	Easy	Solve
2781	T-SQL subquery above average #5	SQL Server — Subqueries sqlserver coding-practice	—	40	Hard	Solve
2782	Valid parentheses depth #5	DSA — Stacks & Queues dsa coding-practice	—	20	Easy	Solve
2783	Above average #6	SQL — Subqueries sql coding-practice	—	30	Medium	Solve
2784	Count vowels in "developer" #6	C# Programs — Strings csharp coding-practice	—	20	Easy	Solve
2785	MongoDB relationships #6	MongoDB — Embedding vs referencing mongodb coding-practice	—	30	Medium	Solve
2786	MySQL subquery above avg #6	MySQL — Subqueries mysql coding-practice	—	30	Medium	Solve
2787	PostgreSQL CTE top earners #6	PostgreSQL — Subqueries & CTEs postgresql coding-practice	—	30	Medium	Solve
2788	Queue — simulate task scheduler #6	DSA — Stacks & Queues dsa coding-practice	—	30	Medium	Solve
2789	Sum 1..10 #6	JavaScript — Objects javascript coding-practice	—	30	Medium	Solve
2790	Sum 1..10 #6	React — useEffect react coding-practice	—	30	Medium	Solve
2791	Sum 1..10 #6	Node.js — Express patterns nodejs coding-practice	—	30	Medium	Solve
2792	T-SQL subquery above average #6	SQL Server — Subqueries sqlserver coding-practice	—	30	Medium	Solve
2793	Above average #7	SQL — Subqueries sql coding-practice	—	40	Hard	Solve
2794	Filter evens #7	JavaScript — Objects javascript coding-practice	—	20	Easy	Solve
2795	Filter evens #7	React — useEffect react coding-practice	—	20	Easy	Solve
2796	Filter evens #7	Node.js — Express patterns nodejs coding-practice	—	20	Easy	Solve
2797	MongoDB relationships #7	MongoDB — Embedding vs referencing mongodb coding-practice	—	30	Medium	Solve
2798	MySQL subquery above avg #7	MySQL — Subqueries mysql coding-practice	—	40	Hard	Solve
2799	PostgreSQL CTE top earners #7	PostgreSQL — Subqueries & CTEs postgresql coding-practice	—	40	Hard	Solve
2800	T-SQL subquery above average #7	SQL Server — Subqueries sqlserver coding-practice	—	20	Easy	Solve

Problem of the day

Graph Valid Tree

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