c++ - 如何在模拟中确保输出

Question

我有一个问题陈述:

Zombies have placed themselves at every junction in New York. Each junction 'i' initially has a presence of ai number of zombies. At every timestep each zombie randomly chooses one of its neighboring junctions and walks towards it. Each neighboring junction is choosen by the zombie with an equal probability. In order to safegaurd the citizens of New York we need to find out the number of zombies at every junction after 'k' timesteps.

The network of New York is given as an edge list.

我可以选择输入所有节点和所有边以及k.现在我需要五个人口最多的节点中的僵尸数量。现在我的问题是为什么这个集合总是需要相同？我的意思是，当我第一次运行该程序时，假设我得到了输出集{5,5,5,4,4}，但为什么这个输出总是需要相同？

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提前致谢，我是模拟新手，所以如果我问了一些荒谬的问题，我很抱歉。实际上这是一个 Interviewstreet 问题，我不是要解决方案代码。

Answer 1

僵尸是随机移动的，所以不会每次都一样。它会有些随机。你需要模拟僵尸的这种随机移动。