摘要: You are given a license key represented as a string S which consists only alphanumeric character and dashes. The string is separated into N+1 groups by N dashes.Given a number K, we would want to re... 阅读全文
posted @ 2017-12-10 11:05 xiejunzhao 阅读(273) 评论(0) 推荐(0)