csharp Coding Problems

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

1615 problems in this topic

#	Title	Topics	Acceptance	Pts	Difficulty
851	OOP — Static counter #88	C# Programs — OOP csharp coding-practice	—	30	Medium	Solve
852	OOP — Polymorphism with virtual #89	C# Programs — OOP csharp coding-practice	—	40	Hard	Solve
853	OOP — Encapsulation private field #90	C# Programs — OOP csharp coding-practice	—	30	Medium	Solve
854	OOP — Person class with properties #91	C# Programs — OOP csharp coding-practice	—	20	Easy	Solve
855	OOP — Constructor initialization #92	C# Programs — OOP csharp coding-practice	—	20	Easy	Solve
856	OOP — Method overloading #93	C# Programs — OOP csharp coding-practice	—	30	Medium	Solve
857	OOP — Static counter #94	C# Programs — OOP csharp coding-practice	—	30	Medium	Solve
858	OOP — Polymorphism with virtual #95	C# Programs — OOP csharp coding-practice	—	40	Hard	Solve
859	OOP — Encapsulation private field #96	C# Programs — OOP csharp coding-practice	—	30	Medium	Solve
860	OOP — Person class with properties #97	C# Programs — OOP csharp coding-practice	—	20	Easy	Solve
861	OOP — Constructor initialization #98	C# Programs — OOP csharp coding-practice	—	20	Easy	Solve
862	OOP — Method overloading #99	C# Programs — OOP csharp coding-practice	—	30	Medium	Solve
863	OOP — Static counter #100	C# Programs — OOP csharp coding-practice	—	30	Medium	Solve
864	List — add and sum #1	C# Programs — Collections csharp coding-practice	—	20	Easy	Solve
865	Dictionary — word count #2	C# Programs — Collections csharp coding-practice	—	30	Medium	Solve
866	HashSet — remove duplicates #3	C# Programs — Collections csharp coding-practice	—	20	Easy	Solve
867	Queue — FIFO demo #4	C# Programs — Collections csharp coding-practice	—	20	Easy	Solve
868	Stack — LIFO demo #5	C# Programs — Collections csharp coding-practice	—	20	Easy	Solve
869	SortedDictionary — ordered keys #6	C# Programs — Collections csharp coding-practice	—	30	Medium	Solve
870	List — add and sum #7	C# Programs — Collections csharp coding-practice	—	20	Easy	Solve
871	Dictionary — word count #8	C# Programs — Collections csharp coding-practice	—	30	Medium	Solve
872	HashSet — remove duplicates #9	C# Programs — Collections csharp coding-practice	—	20	Easy	Solve
873	Queue — FIFO demo #10	C# Programs — Collections csharp coding-practice	—	20	Easy	Solve
874	Stack — LIFO demo #11	C# Programs — Collections csharp coding-practice	—	20	Easy	Solve
875	SortedDictionary — ordered keys #12	C# Programs — Collections csharp coding-practice	—	30	Medium	Solve
876	List — add and sum #13	C# Programs — Collections csharp coding-practice	—	20	Easy	Solve
877	Dictionary — word count #14	C# Programs — Collections csharp coding-practice	—	30	Medium	Solve
878	HashSet — remove duplicates #15	C# Programs — Collections csharp coding-practice	—	20	Easy	Solve
879	Queue — FIFO demo #16	C# Programs — Collections csharp coding-practice	—	20	Easy	Solve
880	Stack — LIFO demo #17	C# Programs — Collections csharp coding-practice	—	20	Easy	Solve
881	SortedDictionary — ordered keys #18	C# Programs — Collections csharp coding-practice	—	30	Medium	Solve
882	List — add and sum #19	C# Programs — Collections csharp coding-practice	—	20	Easy	Solve
883	Dictionary — word count #20	C# Programs — Collections csharp coding-practice	—	30	Medium	Solve
884	HashSet — remove duplicates #21	C# Programs — Collections csharp coding-practice	—	20	Easy	Solve
885	Queue — FIFO demo #22	C# Programs — Collections csharp coding-practice	—	20	Easy	Solve
886	Stack — LIFO demo #23	C# Programs — Collections csharp coding-practice	—	20	Easy	Solve
887	SortedDictionary — ordered keys #24	C# Programs — Collections csharp coding-practice	—	30	Medium	Solve
888	List — add and sum #25	C# Programs — Collections csharp coding-practice	—	20	Easy	Solve
889	Dictionary — word count #26	C# Programs — Collections csharp coding-practice	—	30	Medium	Solve
890	HashSet — remove duplicates #27	C# Programs — Collections csharp coding-practice	—	20	Easy	Solve
891	Queue — FIFO demo #28	C# Programs — Collections csharp coding-practice	—	20	Easy	Solve
892	Stack — LIFO demo #29	C# Programs — Collections csharp coding-practice	—	20	Easy	Solve
893	SortedDictionary — ordered keys #30	C# Programs — Collections csharp coding-practice	—	30	Medium	Solve
894	List — add and sum #31	C# Programs — Collections csharp coding-practice	—	20	Easy	Solve
895	Dictionary — word count #32	C# Programs — Collections csharp coding-practice	—	30	Medium	Solve
896	HashSet — remove duplicates #33	C# Programs — Collections csharp coding-practice	—	20	Easy	Solve
897	Queue — FIFO demo #34	C# Programs — Collections csharp coding-practice	—	20	Easy	Solve
898	Stack — LIFO demo #35	C# Programs — Collections csharp coding-practice	—	20	Easy	Solve
899	SortedDictionary — ordered keys #36	C# Programs — Collections csharp coding-practice	—	30	Medium	Solve
900	List — add and sum #37	C# Programs — Collections csharp coding-practice	—	20	Easy	Solve

Problem of the day

Graph Valid Tree

Medium · +15 pts

Solve today

Weekly leaderboard

View all

Be the first to climb the board this week.

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