java连续循环，直到满足条件

Question

所以我必须在eclipse中为我的类创建一个java项目。赋值是创建一个程序，允许用户在程序中输入整数，直到输入某个整数为止（42）。输入整数（42）后，程序将1。平均所有输入的数字2。显示输入的最小值和最大值3。输入的总数。这些必须在不计算（42）的情况下进行计算。这就是我目前所拥有的。我可以从用户那里得到输入，一旦他们输入42，程序就会停止，并显示总数，但包括42。我不知道如何才能为输入添加一个“计数”，这样我就可以使用计数来显示输入的总数，以及将计数除以总和来得到平均值。谢谢你的帮助

package assignment6;

import java.util.Scanner;

public class assignment6 {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        //Scanner
        Scanner input = new Scanner(System.in);

        //Enter integer
        System.out.println("Enter a integer ");
        int data = input.nextInt();

        //Accept integers until 42 is entered
        int sum = 42;
        while (data != 42) {
            sum += data;

            System.out.println("Enter another integer ");
            data = input.nextInt();
        }
        //Display sum of numbers entered
        System.out.println("The sum of all numbers entered is: " + sum);

        //Display Average of numbers entered
        System.out.println("Average of all numbers entered is:" + ( sum/ ));

    }
}

Answer 1

要加一个计数，你只需要做一个变量

    int count = 0;

例如，每次循环重复时，只需向其中添加一个

Answer 2

检查下面的代码

package stackoverflow;

import java.util.Scanner;

public class LoopTest {

public static void main(String[] args) 
{
    // TODO Auto-generated method stub

    Scanner scanner = new Scanner(System.in);
    System.out.println("Enter number");

    int input  = 0;
    double sum = 0;
    double avg = 0;
    int count = 0;

    //Infinite Loop
    while (true)
    {   
        //Accept Number
        input  = scanner.nextInt();

        //Check Entered Number
        if (input  != 42)
        {
            sum = sum + input ;
            count = count + 1;
            avg = sum/count;
        }
        else
            break;
    }

    System.out.println("Numbers Entered : " + count);
    System.out.println("Sum of Numbers : " + sum);
    System.out.println("Average of Numbers : " + avg);
}

}

Answer 3

如果sum设置为0，则可以计算42

另外，使用while(true)永远循环，使用break;结束循环。中断状态执行后什么都没有，所以

int count = 1;
while(true) {
   sum += data;

   System.out.println("Enter another integer ");
   data = input.nextInt();
   count++;
   if(data == 42) {
       break;
   }
}

Answer 4

import java.util.Scanner;

public class assignment6 {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        //Scanner
        Scanner input = new Scanner(System.in);

        //Enter integer
        System.out.println("Enter a integer ");
        int data = input.nextInt();
        int sum   = 0 ;
        int count = 0 ;
        //Accept integers until 42 is entered

        while (data != 42) {
            sum += data;
            count += 1;

            System.out.println("Enter another integer "); 
            data = input.nextInt();
        }
        //Display sum of numbers entered
        System.out.println("The sum of all numbers entered is: " + sum);

        //Display Average of numbers entered
        System.out.println("Average of all numbers entered is:" + ( sum/count ));

    }
}