#262 Removing People with Duplicate Last Names

Companies:

Dcloud

Themes:

JavaStreams & LambdasPractice

Write a method that returns the first person for each lastName, removing people with duplicate last names:

public List<Person> distinctPersonsByLastname(List<Person> persons) {
    // TODO
}

// Example:
// Ivanov Oleg
// Ivanov Petr
// Petrov Dmitry
//
// Result:
// Ivanov Oleg
// Petrov Dmitry

@RequiredArgsConstructor
@EqualsAndHashCode
@Getter
public class Person {
    private final String firstName;
    private final String lastName;
}

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