我创建了一个程序，使您可以输入四个必须有特定要求的数字：
- 必须是 4 或 6 的倍数
- 如果大于 500，则必须是 10 的倍数
该程序采用这四个数字并为您提供它们的总和，它们的平均值，显示四个数字中的最小数字，最后显示四个数字中的最大数字。
现在我想尝试显示每个号码所属的组。如果您想知道，我想要这些组：
如果数字在 0 和 99 之间，则为十
组 如果数字在 100 和 999 之间，则为百
组 如果数字在 1000 和 999,999 之间，则为千
组 如果数字大于 999,999，则为其他组
我的问题是我不知道应该将它们放在我的程序中的哪个位置（下）
import java.util.Scanner;
public class FourNumbersProgram {
private static int readNumber(String message, Scanner in) {
System.out.println("Enter a numbers divislbe by 4 or 6. No negatives.");
System.out.println("**If greater than 500: must be multiple of 10");
System.out.print(message);
while (!in.hasNextInt()) {
in.next();
System.out.println("Sorry, couldn't understand you!");
System.out.print(message);
}
int a = in.nextInt();
return a;
}
private static int readNumberToMatchCondition(String message, Scanner in) {
int number = 0;
do {
number = readNumber(message, in);
if (number < 500) {
if (number % 4 != 0 && number % 6 != 0) {
System.out.println(number + " not divisible by 4 or 6");
} else {
return number;
}
} else {
if (number % 4 != 0 && number % 6 != 0) {
System.out.println(number + " not divisible by 4 or 6");
} else if (number % 10 != 0) {
System.out.println(number + " is greater than 500 and not divisible by 10");
} else {
return number;
}
}
} while (true);
}
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
int randomNumber1 = readNumberToMatchCondition("Enter first number:", in);
int randomNumber2 = readNumberToMatchCondition("Enter second number:", in);
int randomNumber3 = readNumberToMatchCondition("Enter third number:", in);
int randomNumber4 = readNumberToMatchCondition("Enter fourth number:", in);
int sum; // sum of number1, number2, number3, and number4
int avg; // average of number1, number2, number3, and number4
int largest; // largest number of the four integers
int smallest; // smallest number of the four integers
sum = (randomNumber1 + randomNumber2 + randomNumber3 + randomNumber4);
avg = ((sum) / 4);
smallest = randomNumber1;
smallest = (randomNumber2 < smallest) ? randomNumber2 : smallest;
smallest = (randomNumber3 < smallest) ? randomNumber3 : smallest;
smallest = (randomNumber4 < smallest) ? randomNumber3 : smallest;
largest = randomNumber1;
largest = (randomNumber2 > largest) ? randomNumber2 :largest;
largest = (randomNumber3 > largest) ? randomNumber3 :largest;
largest = (randomNumber4 > largest) ? randomNumber4 :largest;
System.out.println();
System.out.println("First number entered: " + randomNumber1); //prints first number entered
System.out.println("Second number entered: " + randomNumber2); //prints second number entered
System.out.println("Third number entered: " + randomNumber3); //prints third number entered
System.out.println("Fourth number entered: " + randomNumber4); //prints fourth number entered
System.out.println();
System.out.println("The sum is: " + sum); //prints sum of four numbers
System.out.println("The average is: " + avg); //prints average of four numbers
System.out.println("The smallest number is: " + smallest); //prints smallest of the four numbers
System.out.println("The largest number is: " + largest); //prints largest of the four numbers
System.out.println();
}
}
这是我的代码的成绩单：
我的教授给了我这个分组程序的样本（下）
import java.util.Scanner;
public class Prog2 {
public static void main(String[] args){
Scanner in = new Scanner(System.in);// read a number
System.out.println("Enter a number: ");
int number = in.nextInt();
if (number < 0) {
System.out.println("Error: Sorry, no negative numbers allowed.");
System.exit(0);
}
int grp1 = (number / 100) + 1;
int grp2 = (number / 1000) + 1;
int grp3 = (number / 1000000) + 1;
switch (grp1){
case 1: // Group Tens
System.out.println(number + " belongs to Group Tens");
break;
default:
switch (grp2) {
case 1:// Group Hundreds
System.out.println(number + " belongs to Group Hundreds");
break;
default:
switch (grp3) {
case 1:// Group Thousands
System.out.println(number + " belongs to Group Thousands");
break;
default:// Group Others
System.out.println(number + " belongs to Group Others");
}
}
}
in.close();
}
}
这是他的代码副本：
我知道他的程序要求用户输入一个数字，然后程序将其分组。我想知道如何将这样的东西放入我的程序中。我很困惑，因为我有四个数字必须分组，我不确定我是否必须为我的所有四个数字（randomNumber1、randomNumber2、randomNumber3、randomNumber4）重复类似于我的教授程序的内容
请不要设置一个完整的更正代码！我想自己修复它并学习！