Imagine instead, you're writing code that's a hundred thousand lines, a million lines, of code. You don't want to write it in this form. All right, and the reason you don't want to do that is, well, several.
换一个角度来思考,你正在写的代码有几十万行,近百万行,你绝对不想写成这种格式,好吧,你不想这么做的原因有以下几个。
Once you hear that description, it's easy to write the code, in fact. This is a place where the recursive version of it is much easier to think about than the iterative one.
实际上一旦你听到了大致描述,就能很轻松的写出代码来,在这一点上应用递归来解决问题,比用迭代要容易理解多了。
So write the so called source code which is in a specific language.
用指定的编程语言,写出所谓的源代码。
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