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#314 Implementing a Document Recommendation Service

Companies:
VK
Themes:
JavaCollections & GenericsPractice

The following function evaluates how relevant a document is to a user: 

interface Scorer<Document, User> {
    double getScore(Document doc, User user);
}

Implement a service that can save a document and return the top K (limit) documents for a user according to this function's score: 

interface RecommenderService<Document, User> {
    List<Document> getTop(User user, int limit);
    void addDocument(Document document);
}

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