在语言演变中这是一个经典的权衡：即以明显的方式改进语言的优势与破坏一些(可能很奇怪的)程序的未知风险之间进行权衡。
This is a classic trade-off in language evolution: weighing the benefits of improving the language in an obvious way against the unknown risk of breaking some (possibly weird) programs.
计算阶乘是递归程序设计的一个经典示例。
The classic example of recursive programming involves computing factorials.
迷宫问题是一个经典的程序设计问题，它要求用计算机编程的方法求解出从迷宫的入口到出口的所有路径。
The maze problem is a classical programing question, Its aim is that to be solved out all routes from entry to exit of the maze by way of computer programming.
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