15.7. Algorithms in Collections

Try these first

1. 1.

   What method is used to sort a list in Java?

   Hint

   Think about order and arrangement.

2. 2.

   How do you reverse a list?

   Hint

   Consider the impact on the current order.

3. 3.

   What does Collections.shuffle() do?

   • Sorts elements
   • Reverses elements
   • Randomly permutes elements

   Hint

   Think about randomization in data.

4. 4.

   True or False: Collections.reverse() can be used on any type of collection.

   • True
   • False

   Hint

   Remember what types of collections the method applies to.

5. 5.

   Implement a Java program that sorts an array of integers, reverses it, and finds the maximum value.

   Hint

   Use Collections methods effectively in your program.

6. 6.

   Write a method to create and return an unmodifiable list from a mutable list of strings.

   Hint

   Think about how to restrict modifications to the list.