You'll define an abstract DynamicProgramming class that contains code common to all the algorithms.

我们将定义一个抽象类dynamicprogramming，它包含所有算法的公共代码。

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What you set the initial scores and Pointers to differs from algorithm to algorithm, which is why the DynamicProgramming class, as shown in Listing 4, defines two abstract methods!

设置的初始值和指针因算法不同而不同。

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