val m = mutableMapOf<Int, Int>()
val numbers = arrayOf(1, 2, 3, 4, 5)
// 将数字与其平方关联起来, {1=1, 2=4, 3=9, 4=16, 5=25}
numbers.associateTo(m) { it to it * it }.forEach {
    _console.log(it)
}