Hi I really need help with the methods for this lab for a computer science class....
Hi I really need help with the methods for this lab for a computer science class. Thanks
Main (WordTester - the application)
-
is complete and only requires uncommenting to test the Word and Words classes as they are completed. The needed imports, class headings, method headings, and block comments are provided for the remaining classes. Javadocs are also provided for the Word and Words classes.
Word
-
The Word class represents a single word. It is immutable. You have been provided a skeleton for this class. Complete the Word class using the block comments, Javadocs, and the following instructions.
1. A String instance variable named word which will contain the word is declared and initialized in the constructor method for you.
2. The one parameter constructor to initialize the word instance variable is also completed.
3. Complete the getLength method to return the number of characters in the word.
4. Complete the getNumVowels method to return the number of vowels in the word. It should use the VOWELS class constant and String’s length, substring, and indexOf methods.
Do not use any String methods that are not in the AP Subset.
5. Complete the getReverse method to return a Word with the letters of this reversed.
6. Complete the toString method to return the String word.
7. Uncomment the Word test code in WordTester and make sure that Word works correctly.
Extra Credit
● Word – add the following methods to Word:
o public boolean equals(Object other) - This method will compare two Word
objects for equality.
o public Word getSortedUpperCaseWord() - This method will return a new Word with its letters changed to upper case and then sorted. You should create an array of Strings representing the uppercase of each of the letters. Then use either selection sort or insertion sort code to order the array. Then you will have to create a string from the array and then create the Word to return.
● Words – add the following method to Words:
o public void printAnagrams() - This method will print the pairs of anagrams in this. Two words w1 and w2 are anagrams if
w1.getSortedUpperCaseWord().equals(w2.getSortedUpperCaseWord()) is true. This method should only print each pair once.
/**
* Word.java
* A <code>Word</code> object represents a word.
*/
public class Word
{
/** The 5 vowels to use for the getNumVowels() method */
private static final String VOWELS = "AEIOUaeiou";
/** The word instance variable */
private String word;
/**
* Constructs a <code>Word</code> object. No change needed.
* @param w the string used to initialize the word.
*/
public Word(String w)
{
word = w;
}
/**
* Gets the length of the word.
* @return the length (number of characters) of the word.
*/
public int getLength()
{
}
/**
* Gets the first letter of the word.
* @return the fisrt letter of the word
*/
public char getFirstLetter()
{
}
/**
* Gets the last letter of the word.
* @return last letter of the word
*/
public char getLastLetter()
{
}
/**
* Gets a substring of letters from the word.
* @param start the starting index
* @param stop the ending index (inclusive)
* @return the characters from [start, stop] inclusively
*/
public String getLetters(int start, int stop)
{
}
/**
* Finds how many times a letter is in word.
* @param letter to find
* @return count of letter in the word
*/
public int findLetter(char letter)
{
}
/**
* Gives the string representing the word.
* @return the string representing the word.
*/
public String toString()
{
}
/**
* Returns a string that will indicate if word comes before,
* after or is equal to the parameter.
* @param stringCompare the string to compare word to
* @return a string indicating how the two strings compare (before, after, equal)
*/
public String compareToString(String stringToCompare)
{
}
/**
* Gets the reverse word.
* @return the characters of word reversed as a string
*/
public String getReverse()
{
}
/**
* Determines if word is palindrome. Same word forward and backward
* @return true if word is palindrome, false otherwise
*/
public boolean isPalindrome()
{
}
/**
* Gets the number of vowels in the word.
* @return the vowel count in the word
*/
public int getNumVowels()
{
}
}
MAIN
import java.util.Arrays;
public class Main
{
public static void main(String[] args)
{
// Test Word
Word one = new Word("chicken");
System.out.println("Word one: " + one);
System.out.println("Number of chars: " + one.getLength());
System.out.println("Number of vowels: " + one.getNumVowels());
System.out.println("Reverse: " + one.getReverse());
System.out.println("\n\n")
// Test Words
Words test1 = new Words(new String[] {
"one", "two", "three", "four", "five", "six", "seven",
"alligator"});
System.out.println("Words test1: " + test1);
System.out.println("Number of words with 2 vowels: " +
test1.countWordsWithNumVowels(2));
System.out.println("Number of words with 5 chars: " +
test1.countWordsWithNumChars(5));
test1.removeWordsWithNumChars(3);
System.out.println("\nWords test1 after removing words " +
"with 3 chars:\n" + test1);
System.out.println("\nReversed words:\n" +
Arrays.toString(test1.getReversedWords()));
System.out.println("\n\n");
}
Homework Answers
Hi Student,
I have completed few of the methods but few of the methods are to be written by you yourself. If you face any issue in that later, let me know, I will provide you the answers in comments.
Below is the code for the same and the output-
import java.util.Arrays;
public class Main
{
public static void main(String[] args)
{
// Test Word
Word one = new Word("chicken");
System.out.println("Word one: " + one);
System.out.println("Number of chars: " + one.getLength());
System.out.println("Number of vowels: " + one.getNumVowels());
System.out.println("Reverse: " + one.getReverse());
System.out.println("\n\n");
// Test Words
Words test1 = new Words(new String[] {
"one", "two", "three", "four", "five", "six", "seven",
"alligator"});
System.out.println("Words test1: " + test1);
/* System.out.println("Number of words with 2 vowels: " +
test1.countWordsWithNumVowels(2));
System.out.println("Number of words with 5 chars: " +
test1.countWordsWithNumChars(5));
test1.removeWordsWithNumChars(3);
System.out.println("\nWords test1 after removing words " +
"with 3 chars:\n" + test1);
System.out.println("\nReversed words:\n" +
Arrays.toString(test1.getReversedWords()));*/
System.out.println("\n\n");
}
}
public class Word
{
/** The 5 vowels to use for the getNumVowels() method */
private static final String VOWELS = "AEIOUaeiou";
/** The word instance variable */
private String word;
/**
* Constructs a <code>Word</code> object. No change needed.
* @param w the string used to initialize the word.
*/
public Word(String w)
{
word = w;
}
/**
* Gets the length of the word.
* @return the length (number of characters) of the word.
*/
public int getLength()
{
return this.word.length();
}
/**
* Gets the first letter of the word.
* @return the fisrt letter of the word
*/
public char getFirstLetter()
{
return this.word.charAt(0);
}
/**
* Gets the last letter of the word.
* @return last letter of the word
*/
public char getLastLetter()
{
return
this.word.charAt(this.word.length()-1);
}
/**
* Gets a substring of letters from the word.
* @param start the starting index
* @param stop the ending index (inclusive)
* @return the characters from [start, stop] inclusively
*/
public String getLetters(int start, int stop)
{
return word.substring(start, stop);
}
/**
* Finds how many times a letter is in word.
* @param letter to find
* @return count of letter in the word
*/
public int findLetter(char letter)
{
return word.split(letter+"").length-1;
}
/**
* Gives the string representing the word.
* @return the string representing the word.
*/
public String toString()
{
return word.toString();
}
/**
* Returns a string that will indicate if word comes before,
* after or is equal to the parameter.
* @param stringCompare the string to compare word to
* @return a string indicating how the two strings compare (before, after, equal)
*/
public String compareToString(String stringToCompare)
{
if (word.compareTo(stringToCompare)
== 0) {
return
"equal";
}
if (word.compareTo(stringToCompare)
> 0) {
return
"after";
}
if (word.compareTo(stringToCompare)
< 0) {
return
"before";
}
else return null;
}
/**
* Gets the reverse word.
* @return the characters of word reversed as a string
*/
public String getReverse()
{
StringBuilder sb = new StringBuilder(word);
return sb.reverse().toString();
}
/**
* Determines if word is palindrome. Same word forward and backward
* @return true if word is palindrome, false otherwise
*/
public boolean isPalindrome()
{
StringBuilder sb = new
StringBuilder(word);
String rev =
sb.reverse().toString();
return (word.equals(rev) ? true : false);
}
/**
* Gets the number of vowels in the word.
* @return the vowel count in the word
*/
public int getNumVowels()
{
//Run a double for loop to count this-> do it yourself
return 0;
}
}
public class Words {
public Words(String[] strings) {
// TODO Auto-generated constructor
stub
}
}
Output-
Word one: chicken
Number of chars: 7
Number of vowels: 0
Reverse: nekcihc
Words test1: Words@7852e922
Regards,
Ankit
Add Answer to:
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