Java 计算每个应用程序的用户输入平均值

嗨，我是java新手，正在做一些练习来熟悉它。我试图使用for-each或增强for循环计算用户输入数的总和和平均值。我所做的是将数字存储在一个数组中。你能检查一下我的代码是否正确吗

Scanner scanner = new Scanner(System.in);

double inputNum;
double sum= 0;
int counter;

System.out.println("How many entries would you like input");
int entry = scanner.nextInt();

for (counter = 0; counter< entry; counter++){

    double [] numbers = new double[entry]; 
    System.out.println("Please input number " + (counter +1));
    numbers[counter] = scanner.nextDouble();

    for (double x : numbers[counter]) {
        x += sum;
    }

    System.out.println("The total sum is: " + sum);
    double average = sum/entry;
    System.out.println("The total average is: " + average);
}

Scanner Scanner=新的扫描仪（System.in）；
双输入；
双和=0；
整数计数器；
System.out.println（“您希望输入多少条目”）；
int entry=scanner.nextInt（）；
用于（计数器=0；计数器

您不需要内部循环。在数组中存储每个输入后，可以将其添加到总和中

此外，您应该在外部循环之外分配数组一次，而不是在每次迭代中

double [] numbers = new double[entry];
for (counter = 0; counter< entry; counter++){       
    System.out.println("Please input number " + (counter +1));
    numbers[counter] = scanner.nextDouble();
    sum+= numbers[counter];
}
System.out.println("The total sum is: " + sum);
double average = sum/entry;
System.out.println("The total average is: " + average);

double[]数字=新的双[输入]；
对于（计数器=0；计数器

将求和和和平均逻辑置于循环之外。这应该起作用：

double [] numbers = new double[entry]; 
for (counter = 0; counter< entry; counter++){
  System.out.println("Please input number " + (counter +1));
  numbers[counter] = scanner.nextDouble();       
  sum += numbers[counter];
}

System.out.println("The total sum is: " + sum);
double average = sum/entry;
System.out.println("The total average is: " + average);

double[]数字=新的双[输入]；
用于（计数器=0；计数器

您不能将for each与扫描仪一起使用。此外，您也不需要存储任何内容。只要记下总数就行了

Scanner scanner = new Scanner(System.in);

System.out.println("How many entries would you like input?");
int numEntries = scanner.nextInt();

double sum = 0;
for (counter = 1; counter <= numEntries; counter++) {
    System.out.println("Please input number " + counter + ": ");
    sum += scanner.nextDouble();
}
System.out.println("The total sum is: " + sum);
System.out.println("The average is: " + sum / numEntries);

Scanner Scanner=新的扫描仪（System.in）；
System.out.println（“您希望输入多少条目？”）；
int numEntries=scanner.nextInt（）；
双和=0；
对于（counter=1；counter相同代码，平均值在循环外，无用数组被删除：

Scanner scanner = new Scanner(System.in);

double sum = 0;

System.out.println("How many entries would you like input");
int entry = scanner.nextInt();

for (int counter = 1; counter <= entry; counter++) {
    System.out.println("Please input number " + counter);
    sum += scanner.nextDouble();
}

System.out.println("The total sum is: " + sum);
double average = sum / entry;
System.out.println("The total average is: " + average);

Scanner Scanner=新的扫描仪（System.in）；
双和=0；
System.out.println（“您希望输入多少条目”）；
int entry=scanner.nextInt（）；
for（int counter=1；counter，但不需要数组。只需跟踪总和即可。@n这也是正确的，但以后可能还有其他代码需要数组。for-each不适用于表达式类型double，需要使用数组或某些IterableI正在检查是否可以使用for-each循环