DSA
Master the patterns
Search the bank, then filter by difficulty, pattern, data structure, or algorithm. Each problem includes approaches, solutions, and walkthroughs.
Active·2,723
Easy·667
Medium·1,394
Hard·662
Patterns
Recognize the move
Filter the bank by pattern — each card links into the problem index.
Problem index
Browse problems
Search by title, then refine with facets. Sorted by problem ID.
Difficulty
Facets
20 of 115 matching · 2723 totalSort: id ↑
No.ProblemDifficulty
- 0192Count PrimesMed
- 0466Largest Palindrome ProductHard
- 0770Ambiguous CoordinatesMed
- 0783Consecutive Numbers SumHard
- 0799Longest Mountain in ArrayMed
- 0823Reordered Power of 2Med
- 0860Super PalindromesHard
- 0903Largest Time for Given DigitsMed
- 0924Powerful IntegersMed
- 1203Sequential DigitsMed
- 1413Count Good TripletsEasy
- 1441Detect Pattern of Length M Repeated K or More TimesEasy
- 1472Maximum Number of Achievable Transfer RequestsHard
- 1486Count Subtrees With Max Distance Between CitiesHard
- 1489Coordinate With Maximum Network QualityMed
- 1493Lexicographically Smallest String After Applying OperationsMed
- 1504Count Substrings That Differ by One CharacterMed
- 1689Splitting a String Into Descending Consecutive ValuesMed
- 1702Sum of All Subset XOR TotalsEasy
- 1756Count Square Sum TriplesEasy
Showing 20 of 115