Question

嗨，我是编程新手，我想知道如何简化以下代码。有没有办法可以设置一个变化，而不是设置第1-6个月？

double RATE;
double SAVING; 
double MONTH1;
double MONTH2;
double MONTH3;
double MONTH4;
double MONTH5;
double MONTH6;

System.out.print("Enter the monthly saving amount: ");
SAVING = input.nextDouble();

RATE = 1.00417;

MONTH1 = SAVING * RATE;
MONTH2 = (MONTH1 + SAVING) * RATE;
MONTH3 = (MONTH2 + SAVING) * RATE;
MONTH4 = (MONTH3 + SAVING) * RATE;
MONTH5 = (MONTH4 + SAVING) * RATE;
MONTH6 = (MONTH5 + SAVING) * RATE;

System.out.println("After the sixth month, the account value is $" + (float) MONTH6);

Answer 1

你在这做什么：

MONTH1 = SAVING * RATE;
MONTH2 = (MONTH1 + SAVING) * RATE;
MONTH3 = (MONTH2 + SAVING) * RATE;
MONTH4 = (MONTH3 + SAVING) * RATE;
MONTH5 = (MONTH4 + SAVING) * RATE;
MONTH6 = (MONTH5 + SAVING) * RATE;

你一遍又一遍地写了几乎相同的东西。

对于类似的重复性任务，循环始终是更好的解决方案。

使用循环，您甚至不需要所有MONTH个变量。以下是使用循环消除重复代码totalMonths个月后计算帐户值的示例：

int accountValue = 0;
int monthNumber = 0;

while (monthNumber < totalMonths) {                // Do what's inside the brackets as long as monthNumber is less than totalMonths.
    accountValue = (accountValue + saving) * rate; // Update the account value with saving and rate.
    monthNumber = monthNumber + 1;                 // Increase monthNumber by one.
}

System.out.println("After " + totalMonths + " months, the account value is $" + accountValue);

在上述代码accountValue结束时，totalMonths个月过后，帐户总值将会有。

这是一个非常简单的例子。试验它并确保你100％理解它。

_{请注意，我用小写（camelCase编写了我的变量名称，确切地说），因为它是Java中常见的naming convention。}

如何简化以下课程

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