求字符串长度不许使用循环和条件



求字符串长度不许使用循环和条件

同事在群里发了一道题目：求字符串长度，但不许用任何判断语句、循环语句。据说这个题目还是某个常青藤大学入学的题目。

当然方法肯定是多种多样的。这里聊下如果是我解这道题的第一反应。不许用循环那么可以采用递归，递归是可以实现循环的。像scheme语言中就没有提供循环的语法。


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