How Can I Remove Duplicate Emails from an Array in Java Without Using Hashcodes or Sets?

Removing Duplicate Emails in an Array in Java

In your Java program, you need to eliminate duplicate email addresses from an array. Here's how you can achieve this without using hashcodes or Sets:

Convert the array to a List:

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

Sort the List in ascending order:

Collections.sort(emailAddresses);

Now, you can iterate through the sorted List and check for consecutive duplicate emails:

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
    }
}

Finally, convert the updated List back to an array:

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

This modified code will effectively remove duplicate email addresses from the array while preserving their order.

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