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import java.util.ArrayList;
import java.util.Arrays;
public class WordPairList
{
/** The list of word pairs,
initialized by the constructor. */
private ArrayList<WordPair> allPairs;
/** Constructs a WordPairList object as described in part (a).
* Precondition: words.length >= 2
*/
public WordPairList(String[] words)
{
allPairs = new ArrayList<WordPair>();
for (int i=0; i<words.length; i++)
{
for (int j=i+1; j<words.length; j++)
{
String w1 = words[i];
String w2 = words[j];
allPairs.add(new WordPair(w1, w2));
}
}
}
/** Returns the number of
matches as described in part (b).
*/
public int numMatches()
{
int count =
0;
for (int i=0; i<allPairs.size(); i++)
{
WordPair
tmp = allPairs.get(i);
if (tmp.getFirst().equals(tmp.getSecond()))
{
count++;
}
}
return count;
}
public
String toString()
{
return allPairs.toString();
}
}
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