5.4 - Stream Operations
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Practice Questions
Test your understanding with targeted questions
What does the filter() method do in a Stream?
💡 Hint: Think about what you're trying to achieve with the elements in the Stream.
What type of operation is map()?
💡 Hint: Recall if it returns a Stream or a final result.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What type of operation is the map() method?
💡 Hint: Recall how the method affects the data flow.
The collect() method is used for what purpose?
💡 Hint: Think about the final form you want the data to take.
2 more questions available
Challenge Problems
Push your limits with advanced challenges
Build a Stream operation that filters a list of integers to find the sum of all even numbers.
💡 Hint: Consider the condition that defines even numbers.
Create a program that counts the number of unique words from a Stream of sentences.
💡 Hint: Use distinct() to handle unique entries and consider using flatMap for breaking sentences into words.
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