Question

我需要以这种形式打印我的最终阵列1 2 3 4 5 MEGA：6 现在它正在打印所有已连接的数字，我不知道如何制作间距并在数组中的第5和第6个数字之间添加单词mega

import java.util.Scanner;
public class SuperLottoPlus {
    //create array
    public static int[] generateSuperLottoNumbers()
    {
        int[] numbers;
        numbers = new int[6];
        numbers[0] = (int) (47 * Math.random()) + 1;
        numbers[1] = (int) (47 * Math.random()) + 1;
        numbers[2] = (int) (47 * Math.random()) + 1;
        numbers[3] = (int) (47 * Math.random()) + 1;
        numbers[4] = (int) (47 * Math.random()) + 1;
        numbers[5] = (int) (27 * Math.random()) + 1;
        return numbers;
    }
    //method to print ticket
    public static void printTicket(int [] array)
    {
        int i;
        for(i = 0; i < array.length ; i++)
        {
            System.out.print(array[i]);
        }

    }
   //print ticket numbers based on the amount of tickets user wants (n)
    public static void main (String[] args)
    {
        int n;
        Scanner keyboard = new Scanner(System.in);
        System.out.println("How many lottery tickets would you like?");
        n = keyboard.nextInt();
        for(int i = 0; i < n; i++)
        {
            printTicket(generateSuperLottoNumbers());
            System.out.println();
        }
    }
}

Answer 1

只需添加空格，并进行条件检查，如果您在最后一个数字处决定是否打印MEGA

public static void printTicket(int [] array)
{
    int i;
    for(i = 0; i < array.length ; i++)
    {
        if (i == array.length - 1) 
        {
            System.out.print("MEGA: ");
        }
        System.out.print(array[i]);
        System.out.print(" ");
    }

Answer 2

public static void printTicket(int [] array)
{
    int i;
    for(i = 0; i < array.length ; i++)
    {
        if(i == array.length - 1){ //looks for last element
            System.out.print("MEGA:"); //adds word MEGA before last element
        }
        System.out.print(array[i] + " "); //prints all elements, last one after MEGA word
    }

}

Answer 3

使用此：

for(int i = 0; i < array.length; i++)
    {
        if(i == 5)
            System.out.print("MEGA:");
        System.out.print(array[i] + " ");
    }

以某种方式打印int数组

3 个答案: