val range:IntRange = 0..1024 //范围0到1024
val range_exclusive: IntRange = 0 until 1024 //范围0到1023
val emptyRange: IntRange = 0..-1
fun main(args: Array<String>) {
println(emptyRange.isEmpty()) //判断区间是否为空
println(range.contains(50)) //判断50是否在该区间
println(50 in range) //判断50是否在该区间，效果与range.contains(50)一致
for (i in range_exclusive) {
print("$i,")
}
}
运行结果
