在Xcode6下开发时,使用autolayout的xib出现警告:Automatic Preferred Max Layout Width is not available on iOS versions prior to 8.0 原因:xcode6下默认开启自动设置UILabel的 preferredMaxLayoutWidth 的属性,而自动的特性只支持iOS8,故导致这个警
描述Steven loves reading book on his phone. The book he reads now consists of N paragraphs and the i-th paragraph contains ai characters.Steven wants to make the characters easier to read, so he decide