元素统计“
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@ -30,4 +30,8 @@ fun main(args: Array<String>) {
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// 查找所有满足条件的元素
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println("element > 10 = ${list.filter { it >= 20 }}")
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// 统计满足条件的元素个数
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println("element num > 10 = ${list.count { it >= 20 }}")
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}
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