Question

     List<String> n = new ArrayList<String>();
 n.add("Allen");
 n.add("beer");
 n.add("Johnson");
 n.add("bar");
 n.add("girl");
   List<String> v = new ArrayList<String>();
 v.add("shot");
 v.add("drank");
 v.add("ate");
 v.add("hit");
 v.add("tossed");
     int noun = (int)(Math.random() * n.size());
     int verb = (int)(Math.random() * v.size());
     int noun2 = (int)(Math.random() * n.size());
     int verb2 = (int)(Math.random() * v.size());
     int noun3 = (int)(Math.random() * n.size());
     String a = new String(n.get(noun) + " " + v.get(verb) + " " + n.get(noun2) + " " +  "and" + " " + v.get(verb2) + " " + n.get(noun3));

  int x = 0;
  while (x < 5) {
       System.out.println(a);
   x++;
 }

然后继续只重复一个陈述，例如：

约翰逊扔了酒吧并击中了酒吧

如何随机使其随机变化。

Answer 1

您只运行一次字符串赋值。所以它总是一样的。完成作业：

String a = new String(n.get(noun) + " " + v.get(verb) + " " + n.get(noun2) + " " +  "and" + " " + v.get(verb2) + " " + n.get(noun3));

在循环内部，如果你想要多次重新生成它，就像这样：

int x = 0;
while (x < 5) {
   int noun = (int)(Math.random() * n.size());
   int verb = (int)(Math.random() * v.size());
   int noun2 = (int)(Math.random() * n.size());
   int verb2 = (int)(Math.random() * v.size());
   int noun3 = (int)(Math.random() * n.size());
   String a = new String(n.get(noun) + " " + v.get(verb) + " " + n.get(noun2)   + " " +  "and" + " " + v.get(verb2) + " " + n.get(noun3));
   System.out.println(a);
   x++;
 }

Answer 2

您需要重新生成随机字符串，而不是使用一个字符串。只需将随机逻辑放入while循环即可。你可以尝试：

List<String> n = new ArrayList<String>();
    n.add("Allen");
    n.add("beer");
    n.add("Johnson");
    n.add("bar");
    n.add("girl");
    List<String> v = new ArrayList<String>();
    v.add("shot");
    v.add("drank");
    v.add("ate");
    v.add("hit");
    v.add("tossed");

    int x = 0;
    while (x < 5) {
        int noun = (int)(Math.random() * n.size());
        int verb = (int)(Math.random() * v.size());
        int noun2 = (int)(Math.random() * n.size());
        int verb2 = (int)(Math.random() * v.size());
        int noun3 = (int)(Math.random() * n.size());
        String a = n.get(noun) + " " + v.get(verb) + " " + n.get(noun2) + " " + "and" + " " + v.get(verb2) + " " + n.get(noun3);

        System.out.println(a);
        x++;
    }

Answer 3

你需要＆＃34;重新随机化＆＃34;你的随机变量每个都通过while循环运行。即使您使用Math.random()声明变量，它也不会在每次使用时都发生变化。声明变量后，除非通过赋予变量值来更改变量，否则它不会发生变化。所以，你想要这样做：

int x = 0;
while (x < 5) {
     int noun = (int)(Math.random() * n.size());
     int verb = (int)(Math.random() * v.size());
     int noun2 = (int)(Math.random() * n.size());
     int verb2 = (int)(Math.random() * v.size());
     int noun3 = (int)(Math.random() * n.size());
     String a = new String(n.get(noun) + " " + v.get(verb) + " " + n.get(noun2)   + " " +  "and" + " " + v.get(verb2) + " " + n.get(noun3));

     System.out.println(a);
     x++;
}

这样，您可以在while循环的每次迭代中更改noun，verb等的值。

Answer 4

您正在设置＆＃34;随机＆＃34;变量在进入while循环之前。因此，对于while循环的每次迭代，您使用相同的值。为了在每次迭代中获得不同的结果，您还需要在while循环中包含随机数生成。

int x = 0;
while (x < 5) {
   int noun = (int)(Math.random() * n.size());
   int verb = (int)(Math.random() * v.size());
   int noun2 = (int)(Math.random() * n.size());
   int verb2 = (int)(Math.random() * v.size());
   int noun3 = (int)(Math.random() * n.size());
   String a = new String(n.get(noun) + " " + v.get(verb) + " " + n.get(noun2)   + " " +  "and" + " " + v.get(verb2) + " " + n.get(noun3));

   System.out.println(a);
   x++;

}

为什么我的while循环应该是随机的重复相同的语句？

4 个答案: