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docs: clarify hash map vs HashMap terminology (#7195)

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Rajesh Reddy
2026-01-07 17:19:51 +05:30
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src/main/java/com/thealgorithms/datastructures/hashmap/Readme.md
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A hash map organizes data so you can quickly look up values for a given key.
> Note: The term “hash map” refers to the data structure concept, while `HashMap` refers specifically to Java’s implementation.
## Strengths:
- **Fast lookups**: Lookups take O(1) time on average.
- **Flexible keys**: Most data types can be used for keys, as long as they're hashable.