Question

如果有人能帮我解决这个问题，我将不胜感激。

在第三种方法中，我被要求在方法enterSequenceNames和enterSequenceLength

中显示用户键入的内容

我挣扎，因为这些是两种不同的方法，而且它们也是数组？拜托，我该怎么做呢。到目前为止，这是我的代码。

    import java.util.Scanner;
    public class P12Ex5
    {
    public static void main(String[] args)
    {
    Scanner sc = new Scanner(System.in);
    int size;

    System.out.print("Please enter the number of sequences in the film: ");
    size = sc.nextInt();
    int option;

    int [] numberOfSequences;
    //String [] name;
    //int [] length;


    numberOfSequences = new int [size];
    //name = new String [size];
    //length = new int [size];


    do
    {
        System.out.println();
        System.out.println();
        System.out.println();
        System.out.println("*************** MENU ***************"); 
        System.out.println("1.       Enter sequene names"); 
        System.out.println("2.       Enter the length of each sequence in the film(in minutes)");
        System.out.println("3.       Display all sequence details (names and length"); 
        System.out.println("4.       Display the details of longest sequence"); 
        System.out.println("5.       Display the name of the shortest sequence"); 
        System.out.println("6.       Calculate and display the average sequence length"); 
        System.out.println("7.       Exit system"); 

        System.out.println(); 
        System.out.print("Please enter an option: ");
        option = sc.nextInt();
        System.out.println();
        System.out.println();
        System.out.println();

        switch(option)
        {
            case 1:
            enterSequenceNames(numberOfSequences);
            break;

            case 2:
            enterSequenceLength(numberOfSequences);
            break;

            //case 3:
            //displayFilmDetails(numberOfSequences, name, length);



        }

    }while(option != 0);

}   
private static void enterSequenceNames(int [] numberOfSequencesIn)
{
    Scanner sc = new Scanner(System.in);

    int i;

    String name;


    for(i=0; i<numberOfSequencesIn.length; i++)
    {

        System.out.print("Enter name of sequence "+(i+1)+": ");
        name = sc.next();

    }
}

private static void enterSequenceLength(int [] numberOfSequencesIn)
{
    Scanner sc = new Scanner(System.in);

    int i;
    int length;

    for(i=0; i<numberOfSequencesIn.length; i++)
    {

        System.out.print("Enter the length of sequence "+(i+1)+": ");
        length = sc.nextInt(); 

    }


}

private static void displayFilmDetails(int [] numberOfSequencesIn, String [] nameIn, int [] lengthIn)
{
    System.out.println();



    for( int i = 0; i<numberOfSequencesIn.length; i++)
    {
      // System.out.println("Name:    "+nameIn[i]+"Length:      "+lengthIn[i]);
     // System.out.print(nameIn[i], lengthIn[i]);


     }                           
 }
}

Answer 1

在方法之外定义数组，这样您就可以在整个类中访问它。将其设置为static也可以让您在整个程序中访问它。

显示来自不同方法的数组

1 个答案: