dsa Coding Problems

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

3300 problems in this topic

#	Title	Topics	Acceptance	Pts	Difficulty
2451	Anagram check #51	DSA — Strings dsa coding-practice	—	20	Easy	Solve
2452	Valid palindrome "interview" #52	DSA — Strings dsa coding-practice	—	20	Easy	Solve
2453	Longest substring without repeat #53	DSA — Strings dsa coding-practice	—	30	Medium	Solve
2454	Anagram check #54	DSA — Strings dsa coding-practice	—	20	Easy	Solve
2455	Valid palindrome "toolliyo" #55	DSA — Strings dsa coding-practice	—	20	Easy	Solve
2456	Longest substring without repeat #56	DSA — Strings dsa coding-practice	—	30	Medium	Solve
2457	Anagram check #57	DSA — Strings dsa coding-practice	—	20	Easy	Solve
2458	Valid palindrome "neetcode" #58	DSA — Strings dsa coding-practice	—	20	Easy	Solve
2459	Longest substring without repeat #59	DSA — Strings dsa coding-practice	—	30	Medium	Solve
2460	Anagram check #60	DSA — Strings dsa coding-practice	—	20	Easy	Solve
2461	Valid palindrome "leetcode" #61	DSA — Strings dsa coding-practice	—	20	Easy	Solve
2462	Longest substring without repeat #62	DSA — Strings dsa coding-practice	—	30	Medium	Solve
2463	Anagram check #63	DSA — Strings dsa coding-practice	—	20	Easy	Solve
2464	Valid palindrome "interview" #64	DSA — Strings dsa coding-practice	—	20	Easy	Solve
2465	Longest substring without repeat #65	DSA — Strings dsa coding-practice	—	30	Medium	Solve
2466	Anagram check #66	DSA — Strings dsa coding-practice	—	20	Easy	Solve
2467	Valid palindrome "toolliyo" #67	DSA — Strings dsa coding-practice	—	20	Easy	Solve
2468	Longest substring without repeat #68	DSA — Strings dsa coding-practice	—	30	Medium	Solve
2469	Anagram check #69	DSA — Strings dsa coding-practice	—	20	Easy	Solve
2470	Valid palindrome "neetcode" #70	DSA — Strings dsa coding-practice	—	20	Easy	Solve
2471	Longest substring without repeat #71	DSA — Strings dsa coding-practice	—	30	Medium	Solve
2472	Anagram check #72	DSA — Strings dsa coding-practice	—	20	Easy	Solve
2473	Valid palindrome "leetcode" #73	DSA — Strings dsa coding-practice	—	20	Easy	Solve
2474	Longest substring without repeat #74	DSA — Strings dsa coding-practice	—	30	Medium	Solve
2475	Anagram check #75	DSA — Strings dsa coding-practice	—	20	Easy	Solve
2476	Valid palindrome "interview" #76	DSA — Strings dsa coding-practice	—	20	Easy	Solve
2477	Longest substring without repeat #77	DSA — Strings dsa coding-practice	—	30	Medium	Solve
2478	Anagram check #78	DSA — Strings dsa coding-practice	—	20	Easy	Solve
2479	Valid palindrome "toolliyo" #79	DSA — Strings dsa coding-practice	—	20	Easy	Solve
2480	Longest substring without repeat #80	DSA — Strings dsa coding-practice	—	30	Medium	Solve
2481	Anagram check #81	DSA — Strings dsa coding-practice	—	20	Easy	Solve
2482	Valid palindrome "neetcode" #82	DSA — Strings dsa coding-practice	—	20	Easy	Solve
2483	Longest substring without repeat #83	DSA — Strings dsa coding-practice	—	30	Medium	Solve
2484	Anagram check #84	DSA — Strings dsa coding-practice	—	20	Easy	Solve
2485	Valid palindrome "leetcode" #85	DSA — Strings dsa coding-practice	—	20	Easy	Solve
2486	Longest substring without repeat #86	DSA — Strings dsa coding-practice	—	30	Medium	Solve
2487	Anagram check #87	DSA — Strings dsa coding-practice	—	20	Easy	Solve
2488	Valid palindrome "interview" #88	DSA — Strings dsa coding-practice	—	20	Easy	Solve
2489	Longest substring without repeat #89	DSA — Strings dsa coding-practice	—	30	Medium	Solve
2490	Anagram check #90	DSA — Strings dsa coding-practice	—	20	Easy	Solve
2491	Valid palindrome "toolliyo" #91	DSA — Strings dsa coding-practice	—	20	Easy	Solve
2492	Longest substring without repeat #92	DSA — Strings dsa coding-practice	—	30	Medium	Solve
2493	Anagram check #93	DSA — Strings dsa coding-practice	—	20	Easy	Solve
2494	Valid palindrome "neetcode" #94	DSA — Strings dsa coding-practice	—	20	Easy	Solve
2495	Longest substring without repeat #95	DSA — Strings dsa coding-practice	—	30	Medium	Solve
2496	Anagram check #96	DSA — Strings dsa coding-practice	—	20	Easy	Solve
2497	Valid palindrome "leetcode" #97	DSA — Strings dsa coding-practice	—	20	Easy	Solve
2498	Longest substring without repeat #98	DSA — Strings dsa coding-practice	—	30	Medium	Solve
2499	Anagram check #99	DSA — Strings dsa coding-practice	—	20	Easy	Solve
2500	Valid palindrome "interview" #100	DSA — Strings dsa coding-practice	—	20	Easy	Solve

Problem of the day

Number of Islands

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