面试题：Kotlin集合的复杂过滤与映射操作

Question

有一个包含多个`Person`对象的列表，`Person`类有`name`（字符串类型）、`age`（整型）和`hobbies`（字符串列表类型）属性。例如`data class Person(val name: String, val age: Int, val hobbies: List<String>)`，以及列表`val people = listOf(Person("Alice", 25, listOf("reading", "swimming")), Person("Bob", 30, listOf("dancing", "traveling")))`。请通过集合过滤与映射操作，返回一个新的列表，该列表中的元素为满足以下条件的`Person`对象的`name`属性：年龄大于25岁且其爱好列表中包含`"traveling"`。请编写完整的Kotlin代码实现此复杂操作。

Answer 1

data class Person(val name: String, val age: Int, val hobbies: List<String>)

fun main() {
    val people = listOf(
        Person("Alice", 25, listOf("reading", "swimming")),
        Person("Bob", 30, listOf("dancing", "traveling"))
    )

    val result = people.filter { it.age > 25 && it.hobbies.contains("traveling") }
        .map { it.name }

    println(result)
}