Practice Linkedhashmap (15.5.2.2) - Collections and Generics

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9 questions

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6 sample questions

Question 1.
What does a LinkedHashMap retain that a HashMap does not?
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Think about how elements are added.
Question 2.
Can you add null values in a LinkedHashMap?
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Consider the rules for key-value pairs.
3Question 3.
What order does a LinkedHashMap maintain?
- Random order
- Order of keys
- Insertion order
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Think about how you would retrieve elements.
4Question 4.
True or False: LinkedHashMap allows more than one null key.
- True
- False
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Recall the rules regarding keys.
Question 5.
You have a LinkedHashMap that stores tasks with priority levels. How would you efficiently add tasks while maintaining their ordered priority?
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Consider how to traverse the map while inserting.
Question 6.
Implement a LinkedHashMap that counts the frequency of words from a given sentence but keeps track of insertion order. Provide a method to display words in insertion order.
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Think about how you would loop through a LinkedHashMap.

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