java - 带有列表中单词的句子生成器

Question

所以我正在尝试学习 Java，并且我编写了这段代码，用于从列表中生成单词组合，然后放入句子中。问题是从第一个仅包含名称的列表中随机选择的单词(名称)将被重用(我知道为什么但我不确定我是否需要“phrase3”或第三个列表。

这是我的代码:

    package ListOfWords;

     public class test {
   public static void main (String[] args) {
   String[] name = {"Nicole","Ronnie","Robbie","Alex","Deb"};
   String[] action = {"liar","driver","cook","speller","sleeper","cleaner","soccer   
         player"};

 // find out how many words there are in each list
   int nameLength = name.length;
   int actionLength = action.length;

 // Generate two random numbers 
   int  rand1 = (int) (Math.random() * nameLength);
   int  rand2 = (int) (Math.random() * actionLength);

   String phrase1 = name[rand1];
   String phrase2 = action[rand2];

   System.out.print("It is obvious that" + ' ' + phrase1 + " " + "is a better" + " " +  
   phrase2 + " " + "than" + " " + phrase1 + "!" );          
   }
 }

这是我目前得到的结果:

    It is obvious that Robbie is a better cleaner than Robbie!

当您看到第一个列表中的随机名称被重用时 - 我如何确保它不会从第一个列表中选择相同的元素(名称)？

Answer 1

您需要第三个随机数和短语，以选择要使用的第二个名字。例如:

// Generate two random numbers 
   int  rand1 = (int) (Math.random() * nameLength);
   int  rand2 = (int) (Math.random() * actionLength);
   int  rand3 = (int) (Math.random() * nameLength);

   String phrase1 = name[rand1];
   String phrase2 = action[rand2];
   String phrase3 = name[rand3];

   System.out.print("It is obvious that" + ' ' + phrase1 + " " + "is a better" + " " +  
   phrase2 + " " + "than" + " " + phrase3 + "!" );

编辑:为了避免为 phrase1 和 phrase3 选择相同名称的可能性，以下代码应确保使用与 phrase1 不同的索引来选择 phrase3:

int  rand1 = (int) (Math.random() * nameLength);
int  rand2 = (int) (Math.random() * actionLength);
int  rand3 = (int) (Math.random() * nameLength);
while(rand1==rand3){
    rand3 = (int) (Math.random() * nameLength);
}

这会导致rand3不断变化，直到和rand1不一样，这会为phrase1和phrase3选择不同的名字。

请注意，如果名称数组中只有一个名称，这将导致无限循环。