해시코드나 세트를 사용하지 않고 Java 배열에서 중복 이메일을 제거하려면 어떻게 해야 합니까?

List<String> emailAddresses = new ArrayList<>(Arrays.asList(address));

Collections.sort(emailAddresses);

for (int i = 0; i < emailAddresses.size() - 1; i++) {
    if (emailAddresses.get(i).equals(emailAddresses.get(i + 1))) {
        // If current and next emails are same, remove the next one
        emailAddresses.remove(i + 1);
        i--; // Decrement i to avoid skipping an email
    }
}

address = emailAddresses.toArray(new String[0]);