Starting Out with Java: From Control Structures through Objects (7th Edition) (What's New in Computer Science)
7th Edition
ISBN: 9780134802213
Author: Tony Gaddis
Publisher: PEARSON
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Chapter 9, Problem 12PC
Program Plan Intro
Miscellaneous String Operations
Program Plan:
The detail of “StringOperationsDemo” class is shown below:
- In the “main()” method,
- Declare and initialize the variable and array variable.
- Call the wordCount() method to display the number of words in string.
- Call the mostFrequent() method to display the most frequently occurring character.
- Call replaceSubString() method to replace “the” with “that”.
- Call arrayToString() method to convert an array to a string.
- Display the converted string.
The detail of “StringOperations” class is shown below:
- In the “wordCount()” method,
- Separate the string using a space delimiter.
- Return the number of words in string.
- In the “arrayToString()” method,
- Convert the array value to string.
- Return the converted string.
- In the “mostFrequent()” method,
- Declare the variable.
- Convert the String to an array and store into “cArray” variable.
- Create an integer array variable to store the frequencies of the characters in “cArray” variable.
- The for loop executes until the frequencies length. If yes,
- Initialize frequencies elements to “0”.
- The for loop executes until the array length. If yes, loop executes until the array length. If yes,
- Check frequency of element and then calculate it.
- The for loop executes until the frequencies length. If yes,
- Check the frequencies of elements and determine the most frequent character.
- Return the most frequent character.
- In the “replaceSubString()” method,
- Check the “string2” and “string3” are the same. If yes,
- Return the string.
- Create an object for “string1”.
- Determine the first occurrence of “string2”.
- The while loop executes until the "index" is not equal to “-1”. If yes,
- Call the replace() method to replace this occurrence of the substring.
- Find the next occurrence of “string2”.
- Return the string.
- Check the “string2” and “string3” are the same. If yes,
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Chapter 9 Solutions
Starting Out with Java: From Control Structures through Objects (7th Edition) (What's New in Computer Science)
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