Java 正则表达式最大,最小匹配问题

最大匹配模式	X?     X, once or not at all X*     X, zero or more times X+     X, one or more times X{n}     X, exactly n times X{n,}     X, at least n times X{n,m}     X, at least n but not more than m times
最小匹配模式	X??     X, once or not at all X*?     X, zero or more times X+?     X, one or more times X{n}?     X, exactly n times X{n,}?      X, at least n times X{n,m}?     X, at least n but not more than m times