Question

complete this in java

import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.Random;
import java.util.Scanner;

public class WordDetective {

/**
* Picks the first unguessed word to show.
* Updates the guessed array indicating the selected word is shown.
*
* @param wordSet The set of words.
* @param guessed Whether a word has been guessed.
* @return The word to show or null if all have been guessed.
*/
   public static String pickWordToShow(ArrayList<String> wordSet, boolean []guessed) {
return null; //TODO
   }

-----------------------------------------------------

/**
* Some test cases for the pickWordToShow method.
*/
private static void testPickWordToShow() {
boolean error = false;

{ //
ArrayList<String> wordSet = new ArrayList<>();
wordSet.add("ago");
wordSet.add("now");
wordSet.add("own");
wordSet.add("wagon");
boolean []guessed = {true,false,true,false};
  
String expected = "now";
String actual = WordDetective.pickWordToShow(wordSet, guessed);
if (!actual.equals(expected) || !guessed[1]) {
error = true;
System.out.println("testPickWordToShow 1: actual: " + actual + " expected: " + expected);
}
}
  
//suggest adding additional test cases.

if ( error) {
System.out.println("testPickWordToShow failed.");
} else {
System.out.println("testPickWordToShow passed.");
}
}

Answer 1

SOURCE CODE IN JAVA:

import java.io.File;

import java.io.FileNotFoundException;

import java.util.ArrayList;

import java.util.Random;

import java.util.Scanner;

public class WordDetective {

/**

* Picks the first unguessed word to show.

* Updates the guessed array indicating the selected word is shown.

*

* @param wordSet The set of words.

* @param guessed Whether a word has been guessed.

* @return The word to show or null if all have been guessed.

*/

public static String pickWordToShow(ArrayList<String> wordSet, boolean []guessed)

{

for(int i=0;i<guessed.length;i++)

{

if(guessed[i]==false)

{

guessed[i]=true;

return wordSet.get(i);

}

}

return null;

}

//-----------------------------------------------------

/**

* Some test cases for the pickWordToShow method.

*/

private static void testPickWordToShow() {

boolean error = false;

{ //

ArrayList<String> wordSet = new ArrayList<>();

wordSet.add("ago");

wordSet.add("now");

wordSet.add("own");

wordSet.add("wagon");

boolean []guessed = {true,false,true,false};

String expected = "now";

String actual = WordDetective.pickWordToShow(wordSet, guessed);

if (!actual.equals(expected) || !guessed[1]) {

error = true;

System.out.println("testPickWordToShow 1: actual: " + actual + " expected: " + expected);

}

}

//suggest adding additional test cases.

if ( error) {

System.out.println("testPickWordToShow failed.");

} else {

System.out.println("testPickWordToShow passed.");

}

}

}

OUTPUT: