To produce sequences Program plan: In a file “Sequence.java”, Create an interface “Sequence”, Declare a method “next()”. Define a method “powersOf()” that returns a Sequence object whose elements are powers with the exponent passed as argument. Define a method “multiplesOf()” that returns a Sequence object whose elements are multiples of the value passed as argument. In a file “SequenceMethodsTest.java”, create a class “SequenceMethodsTest”, Define the method “main()”, Initialize the final variable. Assign the value returned from the method “multiplesOf()”. Print the string “Multiples: ”. Create loop to iterate from “0” to “9”, Print the value obtained from the method “next()”. Print expected sequence. Assign the value returned from the method “powersOf()”. Print the string “Squares: ”. Create loop to iterate from “0” to “9”, Print the value obtained from the method “next()”. Print expected sequence. Assign the value returned from the method “powersOf()”. Print the string “Cubes: ”. Create loop to iterate from “0” to “9”, Print the value obtained from the method “next()”. Print expected sequence.

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Answer 1

Question

Chapter 9, Problem 21PE

Program Plan Intro

To produce sequences

Program plan:

In a file “Sequence.java”,

Create an interface “Sequence”,

Declare a method “next()”.

Define a method “powersOf()” that returns a Sequence object whose elements are powers with the exponent passed as argument.

Define a method “multiplesOf()” that returns a Sequence object whose elements are multiples of the value passed as argument.

In a file “SequenceMethodsTest.java”, create a class “SequenceMethodsTest”,

Define the method “main()”,

Initialize the final variable.

Assign the value returned from the method “multiplesOf()”.

Print the string “Multiples: ”.

Create loop to iterate from “0” to “9”,

Print the value obtained from the method “next()”.

Print expected sequence.

Assign the value returned from the method “powersOf()”.

Print the string “Squares: ”.

Create loop to iterate from “0” to “9”,

Print the value obtained from the method “next()”.

Print expected sequence.

Assign the value returned from the method “powersOf()”.

Print the string “Cubes: ”.

Create loop to iterate from “0” to “9”,

Print the value obtained from the method “next()”.

Print expected sequence.

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Answer 2

Question

Chapter 9, Problem 21PE

Program Plan Intro

To produce sequences

Program plan:

In a file “Sequence.java”,

Create an interface “Sequence”,

Declare a method “next()”.

Define a method “powersOf()” that returns a Sequence object whose elements are powers with the exponent passed as argument.

Define a method “multiplesOf()” that returns a Sequence object whose elements are multiples of the value passed as argument.

In a file “SequenceMethodsTest.java”, create a class “SequenceMethodsTest”,

Define the method “main()”,

Initialize the final variable.

Assign the value returned from the method “multiplesOf()”.

Print the string “Multiples: ”.

Create loop to iterate from “0” to “9”,

Print the value obtained from the method “next()”.

Print expected sequence.

Assign the value returned from the method “powersOf()”.

Print the string “Squares: ”.

Create loop to iterate from “0” to “9”,

Print the value obtained from the method “next()”.

Print expected sequence.

Assign the value returned from the method “powersOf()”.

Print the string “Cubes: ”.

Create loop to iterate from “0” to “9”,

Print the value obtained from the method “next()”.

Print expected sequence.

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Answer 3

Question

Chapter 9, Problem 21PE

Program Plan Intro

To produce sequences

Program plan:

In a file “Sequence.java”,

Create an interface “Sequence”,

Declare a method “next()”.

Define a method “powersOf()” that returns a Sequence object whose elements are powers with the exponent passed as argument.

Define a method “multiplesOf()” that returns a Sequence object whose elements are multiples of the value passed as argument.

In a file “SequenceMethodsTest.java”, create a class “SequenceMethodsTest”,

Define the method “main()”,

Initialize the final variable.

Assign the value returned from the method “multiplesOf()”.

Print the string “Multiples: ”.

Create loop to iterate from “0” to “9”,

Print the value obtained from the method “next()”.

Print expected sequence.

Assign the value returned from the method “powersOf()”.

Print the string “Squares: ”.

Create loop to iterate from “0” to “9”,

Print the value obtained from the method “next()”.

Print expected sequence.

Assign the value returned from the method “powersOf()”.

Print the string “Cubes: ”.

Create loop to iterate from “0” to “9”,

Print the value obtained from the method “next()”.

Print expected sequence.

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Answer 4

Question

Chapter 9, Problem 21PE

Program Plan Intro

To produce sequences

Program plan:

In a file “Sequence.java”,

Create an interface “Sequence”,

Declare a method “next()”.

Define a method “powersOf()” that returns a Sequence object whose elements are powers with the exponent passed as argument.

Define a method “multiplesOf()” that returns a Sequence object whose elements are multiples of the value passed as argument.

In a file “SequenceMethodsTest.java”, create a class “SequenceMethodsTest”,

Define the method “main()”,

Initialize the final variable.

Assign the value returned from the method “multiplesOf()”.

Print the string “Multiples: ”.

Create loop to iterate from “0” to “9”,

Print the value obtained from the method “next()”.

Print expected sequence.

Assign the value returned from the method “powersOf()”.

Print the string “Squares: ”.

Create loop to iterate from “0” to “9”,

Print the value obtained from the method “next()”.

Print expected sequence.

Assign the value returned from the method “powersOf()”.

Print the string “Cubes: ”.

Create loop to iterate from “0” to “9”,

Print the value obtained from the method “next()”.

Print expected sequence.

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Answer 5

Chapter 9, Problem 21PE

Program Plan Intro

To produce sequences

Program plan:

In a file “Sequence.java”,

Create an interface “Sequence”,

Declare a method “next()”.

Define a method “powersOf()” that returns a Sequence object whose elements are powers with the exponent passed as argument.

Define a method “multiplesOf()” that returns a Sequence object whose elements are multiples of the value passed as argument.

In a file “SequenceMethodsTest.java”, create a class “SequenceMethodsTest”,

Define the method “main()”,

Initialize the final variable.

Assign the value returned from the method “multiplesOf()”.

Print the string “Multiples: ”.

Create loop to iterate from “0” to “9”,

Print the value obtained from the method “next()”.

Print expected sequence.

Assign the value returned from the method “powersOf()”.

Print the string “Squares: ”.

Create loop to iterate from “0” to “9”,

Print the value obtained from the method “next()”.

Print expected sequence.

Assign the value returned from the method “powersOf()”.

Print the string “Cubes: ”.

Create loop to iterate from “0” to “9”,

Print the value obtained from the method “next()”.

Print expected sequence.

Answer 6

Chapter 9, Problem 21PE

Program Plan Intro

To produce sequences

Program plan:

In a file “Sequence.java”,

Create an interface “Sequence”,

Declare a method “next()”.

Define a method “powersOf()” that returns a Sequence object whose elements are powers with the exponent passed as argument.

Define a method “multiplesOf()” that returns a Sequence object whose elements are multiples of the value passed as argument.

In a file “SequenceMethodsTest.java”, create a class “SequenceMethodsTest”,

Define the method “main()”,

Initialize the final variable.

Assign the value returned from the method “multiplesOf()”.

Print the string “Multiples: ”.

Create loop to iterate from “0” to “9”,

Print the value obtained from the method “next()”.

Print expected sequence.

Assign the value returned from the method “powersOf()”.

Print the string “Squares: ”.

Create loop to iterate from “0” to “9”,

Print the value obtained from the method “next()”.

Print expected sequence.

Assign the value returned from the method “powersOf()”.

Print the string “Cubes: ”.

Create loop to iterate from “0” to “9”,

Print the value obtained from the method “next()”.

Print expected sequence.

Answer 7

Chapter 9, Problem 21PE

Program Plan Intro

To produce sequences

Program plan:

In a file “Sequence.java”,

Create an interface “Sequence”,

Declare a method “next()”.

Define a method “powersOf()” that returns a Sequence object whose elements are powers with the exponent passed as argument.

Define a method “multiplesOf()” that returns a Sequence object whose elements are multiples of the value passed as argument.

In a file “SequenceMethodsTest.java”, create a class “SequenceMethodsTest”,

Define the method “main()”,

Initialize the final variable.

Assign the value returned from the method “multiplesOf()”.

Print the string “Multiples: ”.

Create loop to iterate from “0” to “9”,

Print the value obtained from the method “next()”.

Print expected sequence.

Assign the value returned from the method “powersOf()”.

Print the string “Squares: ”.

Create loop to iterate from “0” to “9”,

Print the value obtained from the method “next()”.

Print expected sequence.

Assign the value returned from the method “powersOf()”.

Print the string “Cubes: ”.

Create loop to iterate from “0” to “9”,

Print the value obtained from the method “next()”.

Print expected sequence.

Answer 8

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Answer 9

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Answer 10

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Answer 11

Ch. 9.1 - Prob. 1SC Ch. 9.1 - Prob. 2SC Ch. 9.1 - Prob. 3SC Ch. 9.1 - Prob. 4SC Ch. 9.1 - Prob. 5SC Ch. 9.2 - Prob. 6SC Ch. 9.2 - Prob. 7SC Ch. 9.2 - Prob. 8SC Ch. 9.2 - Prob. 9SC Ch. 9.2 - Prob. 10SC

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Chapter 9 Solutions