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完全是考细心和思考的全面啊!注意点如下:(个人看法)

Posted by zeng at 2008-08-17 17:53:40 on Problem 3332
1.小数点、e不能在第一位和最后一位;
2.字符串中小数点、e最多只能有一个;
3.小数点的前后都必须是数字,e的前一位必须是数字,e的后一位可以是‘+’或‘-’,但是‘+’、‘-’后面必须是数字;
4.e后不能存在小数位;
5、数字与数字之间不能有空格;
整体思路:首先找出小数点和e的位置,在分别对小数点前的数和e后的数进行讨论;

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