标签：ring nbsp ++ ever com inf eve int val
def gray(n: Int): List[String] = {
def go(x: Int, result: List[String]): List[String] = {
if (x <= 0) result
else {
val cur = result.map(s => ("0" + s)) ++ result.reverse.map(s => ("1" + s))
go(x - 1, cur)
}
}
go(n, List(""))
}
标签：ring nbsp ++ ever com inf eve int val
原文地址：https://www.cnblogs.com/wqkant/p/10588570.html
