fun main(args: Array<String>) {
    for (arg in args) { //普通for語句
        println(arg)
    }

    for ((index, value) in args.withIndex()) { //帶下標和值的for語句1
        println("$index -> $value")
    }

    for (indexValue in args.withIndex()) { //帶下標和值的for語句2
        println("${indexValue.index} -> ${indexValue.value}")
    }
}

運行結(jié)果