Question

我想问一下如何让我的代码只是获取输入而不是声明它？这是我的计划。我想输入不同的原子序数而不仅仅是＆＃34; 37＆＃34;喜欢我的代码中的内容。别担心我的评论，用我的母语。谢谢！

 public class ElectConfi {    

      public static void main(String s[]) {

            int atomicNumber = 37;
            String electronConfiguration = getElectronConfiguration(atomicNumber);
            System.out.println(electronConfiguration);
      }
      public static String getElectronConfiguration(int atomicNumber) {

            int[] config = new int[20]; //dito nag store ng number of elec. in each of the 20      
             orbitals.
            String[] orbitals = {"1s^", "2s^", "2p^", "3s^", "3p^", "4s^", "3d^", "4p^", "5s^", 
            "4d^", "5p^", "6s^", "4f^", "5d^", "6p^", "7s^", "5f^", "6d^", "7p^", "8s^"};  
            //Names of the orbitals
            String result="";
            for(int i=0;i<20;i++) //dito ung i represents the orbital and tapos ung j 
            represents ng electrons
            {
                    for(int j=0;(getMax(i)>j)&&(atomicNumber>0);j++,atomicNumber--) //if atomic 
                    number > 0 and ung orbital ay kaya pa magsupport ng more electrons, add 
                    electron to orbital ie increment configuration by 1
                    {
                            config[i]+=1;
                    }
                    if(config[i]!=0)        //d2 nagche-check to prevent it printing empty 
                    orbitals
                    result+=orbitals[i]+config[i]+" ";      //orbital name and configuration 
                    correspond to each other
            }
            return result;
       }
       public static int getMax(int x) //returns the number of max. supported electrons by each 
       orbital. for eg. x=0 ie 1s supports 2 electrons
       {
            if(x==0||x==1||x==3||x==5||x==8||x==11||x==15||x==19)
                    return 2;
            else if(x==2||x==4||x==7||x==10||x==14||x==18)
                    return 6;
            else if(x==6||x==9||x==13||x==17)
                    return 10;
            else
                    return 14;
      }
 }

Answer 1

您可以使用Scanner或BufferedReader并获取用户输入

使用Scanner

Scanner scanner = new Scanner(System.in);
System.out.println("Please input atomic number");
int atomicNumber = scanner.nextInt();

使用BufferedReader

BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
int atomicNumber = Integer.parseInt(reader.readLine());

Answer 2

public static String getElectronConfiguration(int atomicNumber) {}

此方法接受任何int值并返回String结果。所以你只需要提供不同的数字作为输入。此方法无需更改。

如何提供不同的输入？

您可以使用Scanner来执行此操作。

Scanner scanner = new Scanner(System.in);
System.out.println("Please input atomic number");
int atomicNumber = scanner.nextInt();

现在调用你的方法

String electronConfiguration = getElectronConfiguration(atomicNumber);

还有其他方法吗？

您可以在代码中为atomicNumber定义一组值，然后您可以在循环中运行这些值

Answer 3

您可以从命令行参数获取用户输入：

public static void main(String s[]) {

        if (s.length == 0) {
           // Print usage instructions
        } else {
            int atomicNumber = Integer.parseInt(s[0]);
            // rest of program
        }
  }

Answer 4

您可以通过以下方式从命令行参数获取输入：

 Scanner scanner = new Scanner(System.in);
 String inputLine = scanner.nextLine(); //get entire line
 //or
 int inputInt= scanner.nextInt();//get an integer

检查java.util.Scaner api以获取更多信息 - http://docs.oracle.com/javase/7/docs/api/java/util/Scanner.html

希望这有帮助！

如何让我的代码接受输入

4 个答案: