java - 生成介于 0 和 y 之间的随机数，x 是在 java 中生成的数量

Question

我需要帮助生成 0 和 y 之间的随机数，x 是在 java 中生成的数量，正如您所看到的，我几乎就在那里，但是最后对它们进行排序给我带来了麻烦，请帮助我纠正这个问题!

   //imports
import java.util.Scanner;
import java.util.Random;
//Class
public class RandomGen {
    //Main Method
   public static void main(String[] args) {
       //Prepare Scanner
     Scanner randomScanner = new Scanner(System.in);

     System.out.println("Between 0 and what integer would you like to generate random Integers? ");
        int y = randomScanner.nextInt();

     System.out.println("Please Specify the number of Random integers you    would like:");
        int x= randomScanner.nextInt();

        Random pseudo = new Random();
        //Initialize Random
        for(int i =0; i<x; i++) {

            System.out.println(pseudo.nextInt(y+1));


        }

    }

}

//这段代码生成随机数就好了!现在我需要对它们进行分类!//这几行下面的代码语法错误太多//我可以在上面的代码中添加什么来使其成为//此信息的简单组织，我需要创建一个数组然后将其组织起来。//下面是我失败的尝试，谁能保持上面的代码简单？

 import java.util.Arrays;
import java.util.Scanner;
import java.util.Random;

public class RandomInt {

   public static void main(String[] args) {

    int[] increasingRandoms(int x, int y);
    {

    //establishing an array

     Scanner randomScanner = new Scanner(System.in);

     System.out.println("Between 0 and what integer would you like to generate random Integers? ");
        y = randomScanner.nextInt();

     System.out.println("Please Specify the number of Random integers you    would like:");
        x= randomScanner.nextInt();

        //Setting x to pseudoRandom into an array in order to sort later
        int[] pseudoRandom = new int [x];


      for(int i =0; i< x; i++){

          Random pseudo = new Random();

    pseudoRandom[i] = pseudo.nextInt(y);
      }
      //returning an array in ascending order
      Arrays.sort(pseudoRandom);
      return pseudoRandom;
    }

    for(int number : increasingRandoms(y, x)) {
        System.out.print(number + " ");
    }
    }
    }

Answer 1

尝试先将 increasingRandoms(x,y) 返回的数组存储在一个变量中，然后在增强的 for 循环中使用该变量，而不是直接使用该方法。

int[] temp=increasingRandoms(y, x);
for(int number : temp) {
    System.out.print(number + " ");
}

此外，我不明白为什么你应该在每次循环迭代时创建一个新对象，最好在进入循环之前创建一个 Random 对象，然后在循环中调用 nextInt(int)

   int[] pseudoRandom = new int [x];


Random pseudo = new Random();

  for(int i =0; i< x; i++){

pseudoRandom[i] = pseudo.nextInt(y);
  }