Java Reference
In-Depth Information
factors. Remember that a prime number's factors are only 1 and the prime number itself. Every
number that's not prime has a unique prime factorization. For example, consider the number 54.
The prime factors of 54 are 2, 3, 3 and 3. When the values are multiplied together, the result is 54.
For the number 54, the prime factors output should be 2 and 3. Use
Set
s as part of your solution.
16.20
(Sorting Words with a
TreeSet
)
Write a program that uses a
String
method
split
to to-
kenize a line of text input by the user and places each token in a
TreeSet
. Print the elements of the
TreeSet
. [
Note:
This should cause the elements to be printed in ascending sorted order.]
16.21
(Changing a
PriorityQueue
's Sort Order)
The output of Fig. 16.15 shows that
Priority-
Queue
orders
Double
elements in ascending order. Rewrite Fig. 16.15 so that it orders
Double
ele-
ments in descending order (i.e.,
9.8
should be the highest-priority element rather than
3.2
).
