摘要: 1.匹配hi开头的单词,只需要匹配一次。s='hi ,his name is history!' 2.匹配hi开头的单词,需要匹配二次。s='hi ,his name is history!' 3.匹配hi开头的单词,需要返回全部匹配结果。s='hi ,his name is history!' 4 阅读全文
posted @ 2018-10-08 17:03 SneakingSled 阅读(264) 评论(0) 推荐(0)