Given n non-negative integers a1, a2, ..., an , where each represents a point at coordinate (i, ai). n vertical lines are drawn such that the two endpoints of l...
swift 中 switch case 后默认语句后面都会break, 所以当满足某个case之后仍旧想使它匹配下一个case,使用 fallthrough,则不会被截断;case "b","B" print("this is b/B")case "a": print("this is a") f......