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15 lines
306 B
Java
15 lines
306 B
Java
// "Replace with sum()" "true"
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import java.util.List;
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import java.util.Objects;
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public class Main {
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interface Person {
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int getAge();
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}
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public long test(List<Person> collection) {
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long i = collection.stream().filter(Objects::nonNull).mapToLong(Person::getAge).sum();
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return i;
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}
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} |