Practice problems across 75+ categories
Practice coding problems across all companies and topics • 3600 problems | 879 Easy | 1856 Medium | 842 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 631 | Count Prime-Gap Balanced Subarrays | Medium | ArrayMathQueue |
| 632 | Count Primes | Medium | ArrayMathEnumeration |
| 633 | Count Salary Categories | Medium | Database |
| 634 | Count Servers that Communicate | Medium | ArrayDepth-First SearchBreadth-First Search |
| 635 | Count Sorted Vowel Strings | Medium | MathDynamic ProgrammingCombinatorics |
| 636 | Count Special Integers | Hard | MathDynamic Programming |
| 637 | Count Special Quadruplets | Easy | ArrayHash TableEnumeration |
| 638 | Count Special Subsequences | Medium | ArrayHash TableMath |
| 639 | Count Special Triplets | Medium | ArrayHash TableCounting |
| 640 | Count Square Submatrices with All Ones | Medium | ArrayDynamic ProgrammingMatrix |
| 641 | Count Square Sum Triples | Easy | MathEnumeration |
| 642 | Count Stepping Numbers in Range | Hard | StringDynamic Programming |
| 643 | Count Strictly Increasing Subarrays | Medium | ArrayMathDynamic Programming |
| 644 | Count Strings With Required Characters | Easy | ArrayHash TableString |
| 645 | Count Student Number in Departments | Medium | Database |
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