fun main() { val age = 18 val sex = "女" when(sex) { // when表达式 "女" -> { when (age) { in 0..7 -> println("女孩") in 8..17 -> println("小女生") in 18..30 -> println("小姐姐") in 31..40 -> println("少妇") else -> println("妇女") } } "男" -> println("男的") "others" -> println("性别异常，发生什么了？？？"); } println() val daxiaList = listOf("张三丰", "田伯光", "东方不败", "南海神尼", "灭绝师太", "赵钱孙") for (daxia in daxiaList) { println(daxia) } val wuGongArr = arrayOf("独孤九剑", "少林龙抓手", "葵花宝典", "九阴真经", "九阳神功" , "六脉神剑", "小无相功", "擒龙功", "太祖长拳", "降龙十八掌", "蛤蟆功", "太极拳", "一阳指") for ((index, gongfu) in wuGongArr.withIndex()) { println("排名第 ${index + 1} 的功夫 是 $gongfu") } }运行：
ok.
