for (int i = 0; i < words.size(); ++i) {
System.out.println(words.get(i) + "\t" + sorted.get(i));
assertEquals(words.get(i), sorted.get(i));
for (int i = 0; i < words.size(); ++i) {
System.out.println(words.get(i) + "\t" + sorted.get(i));
assertEquals(words.get(i), sorted.get(i));