import java.util.ArrayList;

public class WordPairList {

	private ArrayList<WordPair> allPairs;
	//https://pastebin.com/KzvKUzek
	public WordPairList(String[] words) {
		allPairs = new ArrayList<WordPair>();
		for (int i=0; i<words.length-1; i++) {
			for (int j=i+1; j<words.length; j++) {
				allPairs.add(new WordPair(words[i],words[j]));
			}
		}
	}
	public int numMatches() {
		int count = 0;
		for (int i=0; i<allPairs.size(); i++) {
			if (allPairs.get(i).first.contentEquals(allPairs.get(i).second)) {
				count++;
			}
		}
		return count;
	}
	public static void main(String[] args) {
		// TODO Auto-generated method stub

	}

}