If you find yourself performing a task repeatedly, consider writing a program to do it.
如果您发现自己在重复执行某个任务,可以考虑编写一个程序来完成这个任务。
Your eye repeatedly pauses to consider each horizontal line and the box created by each combination of line and background color.
视线一再受到水平线、边框和背景构成的方块的影响而停顿。
But Listing 1's code is inefficient because it solves some of the same recursive subproblems repeatedly. For example, consider the computation of fibonacci1 (5), represented in Figure 1.
但是清单1的代码效率不高,因为它重复地解决相同的递归子问题。
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