kotlin的when表达式、数组循环等

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.