And you really, wherever possible, want to avoid that exponential algorithm, because that's really deadly. Yes.

比你的电脑的性能增长的快多了，并且大家无论何时，都要避免去用指数级的函数。

麻省理工公开课 - 计算机科学及编程导论课程节选

So conceptually the key difference here, besides the syntax looking slightly different, it just means that if you want a chunk of code to execute no matter what initially, ; you can use the do while loop; if you want to check a condition first, you can use the while loop.

所以概念上，则关键的区别是，除了语法看起来有点不同，它的意思是如果你想要一段代码,最初无论如何都要执行，你就可以用do，while循环;,如果你想要先检查条件，你可以用while循环。

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