Practice problems across 75+ categories
Practice problems frequently asked at Meta • 2900 problems | 652 Easy | 1528 Medium | 703 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 2071 | Number of Even and Odd Bits | Easy | Bit Manipulation |
| 2072 | Number of Excellent Pairs | Hard | ArrayHash TableBinary Search |
| 2073 | Number of Flowers in Full Bloom | Hard | ArrayHash TableBinary Search |
| 2074 | Number of Good Binary Strings | Medium | Dynamic Programming |
| 2075 | Number of Good Leaf Nodes Pairs | Medium | TreeDepth-First SearchBinary Tree |
| 2076 | Number of Good Pairs | Easy | ArrayHash TableMath |
| 2077 | Number of Good Paths | Hard | ArrayHash TableTree |
| 2078 | Number of Good Ways to Split a String | Medium | Hash TableStringDynamic Programming |
| 2079 | Number of Great Partitions | Hard | ArrayDynamic Programming |
| 2080 | Number of Increasing Paths in a Grid | Hard | ArrayDynamic ProgrammingDepth-First Search |
| 2081 | Number of Islands | Medium | ArrayDepth-First SearchBreadth-First Search |
| 2082 | Number of Islands II | Hard | ArrayHash TableUnion Find |
| 2083 | Number of Longest Increasing Subsequence | Medium | ArrayDynamic ProgrammingBinary Indexed Tree |
| 2084 | Number of Matching Subsequences | Medium | ArrayHash TableString |
| 2085 | Number of Nodes With Value One | Medium | ArrayTreeDepth-First Search |
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