Permutation of word Program plan: Filename: “PermutationIterator.java” This program file is used to define a class “PermutationIterator”. In the code, Import the required packages. Define a class “PermutationIterator”. Define the class members. Define the constructor “PermutationIterator()”. Initialize the class members. Define a method “nextPermutation()”. If the length of the word is equal to 0. Increment “current” by 1. Return an empty string. Declare a variable “c” and assign the character of “word” at “current” position. Call the method “nextPermutation()” and assign the value to “nextpermut”. If the condition “!tailIterator.hasMorePermutations()” is true, Increment the current by 1. If the “current” is greater than or equal to length of the “word”, Set the value of “tailIterator” as “null”. Else If the “current+1” is greater than or equal to the length of the “word”, Get substring of “word” to “tail”. If the “current+1” is less than the length of the “word”, Get the substring of “word” to “tail”. Create “tailIterator” as an object of “PermutationIterator”. Return the value of sum of character “c” and string “nextPermut”. Define a method “hasMorePermutations()”. Return the value. Filename: “PermutationIterator.java” This program file is used to define a class “PermutationIteratorDemo”. In the code, Import the required packages. Define a class “PermutationIteratorDemo”. Define the “main” method. Define the object “iter” of “PermutationIterator”. Call the method “nextPermutation()” using “iter” and return the value. Print the expected value. Call the method “nextPermutation()” using “iter” and return the value. Print the expected value. Call the method “nextPermutation()” using “iter” and return the value. Print the expected value. Call the method “nextPermutation()” using “iter” and return the value. Print the expected value. Call the method “nextPermutation()” using “iter” and return the value. Print the expected value. Call the method “nextPermutation()” using “iter” and return the value. Print the expected value. Call the method “nextPermutation()” using “iter” and return the value. Print the expected value.

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Chapter 13, Problem 4PP

Program Plan Intro

Permutation of word

Program plan:

Filename: “PermutationIterator.java”

This program file is used to define a class “PermutationIterator”. In the code,

Import the required packages.

Define a class “PermutationIterator”.

Define the class members.

Define the constructor “PermutationIterator()”.

Initialize the class members.

Define a method “nextPermutation()”.

If the length of the word is equal to 0.

Increment “current” by 1.

Return an empty string.

Declare a variable “c” and assign the character of “word” at “current” position.

Call the method “nextPermutation()” and assign the value to “nextpermut”.

If the condition “!tailIterator.hasMorePermutations()” is true,

Increment the current by 1.

If the “current” is greater than or equal to length of the “word”,

Set the value of “tailIterator” as “null”.

Else

If the “current+1” is greater than or equal to the length of the “word”,

Get substring of “word” to “tail”.

If the “current+1” is less than the length of the “word”,

Get the substring of “word” to “tail”.

Create “tailIterator” as an object of “PermutationIterator”.

Return the value of sum of character “c” and string “nextPermut”.

Define a method “hasMorePermutations()”.

Return the value.

Filename: “PermutationIterator.java”

This program file is used to define a class “PermutationIteratorDemo”. In the code,

Import the required packages.

Define a class “PermutationIteratorDemo”.

Define the “main” method.

Define the object “iter” of “PermutationIterator”.

Call the method “nextPermutation()” using “iter” and return the value.

Print the expected value.

Call the method “nextPermutation()” using “iter” and return the value.

Print the expected value.

Call the method “nextPermutation()” using “iter” and return the value.

Print the expected value.

Call the method “nextPermutation()” using “iter” and return the value.

Print the expected value.

Call the method “nextPermutation()” using “iter” and return the value.

Print the expected value.

Call the method “nextPermutation()” using “iter” and return the value.

Print the expected value.

Call the method “nextPermutation()” using “iter” and return the value.

Print the expected value.

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