没有得到正确的输出...逻辑正确

我的代码给出正确的结果，除了balance = 3926。最低支付金额：370，而应该是360.程序应该按照给定的年利率打印最低月付款。给定初始余额，代码应该在年底计算余额。我们正在尝试每月支付10美元的初始余额。如果年底余额有余额，我们会编写代码将余额重置为初始余额，将付款额增加10美元，然后再次尝试（使用相同的代码！）以计算余额这一年，看看这个新的支付值足够没有得到正确的输出...逻辑正确

annualInterestRate = 0.2 

balance = 3926 

monthlyinterestrate = annualInterestRate/12.0 

remainingBalance = balance 

month = 1 
total = 0 

payment = 10 

def CheckMinimumPayment(payment,balance): 

    "Checking if payment is in correct balance" 
    while(payment*12 < balance): 

     payment += 10 
    return payment 

payment = CheckMinimumPayment(payment,balance) 

while(month <= 12): 
    remainingBalance = remainingBalance - payment + (annualInterestRate/12.0) * (remainingBalance - payment) 
    month += 1 
    total += payment 


payment = CheckMinimumPayment(payment,total+remainingBalance) 

print("Lowest Payment: " + str(payment))

来源

2013-02-25 user1437027

而*为什么*是360不正确？计算结果是什么，你能为我们解决这个问题吗？ – 2013-02-25 16:47:59

发布时，请确保将您的代码放入代码块（这是“{}”按钮）。我是第二个为你解决它的人。 – n00dle 2013-02-25 16:50:12

根据程序的回答是370，但它应该是360 – user1437027 2013-02-25 16:51:00

大的问题是，你不会再迭代通过兴趣环路（你有什么作为while(month <= 12)）每次尝试新的付款时间。将该循环写入一个函数，并在每次尝试新付款时调用它。欠款余额取决于付款情况，因为每个月的较大付款意味着每月增加的利息较少。这是我用的：

annualInterestRate = 0.2 
init_balance = 3926 

monthlyInterestRate = annualInterestRate/12.0 
init_payment = 10 

def owedBalance(payment,balance): 
    """ Calculate total owed balance after one year 
     given an initial balance and montly payment""" 

    for month in range(12): 
     balance = (balance - payment) * (monthlyInterestRate + 1) 

    return payment*12 + balance 

def CheckMinimumPayment(payment,balance): 
    "Checking if payment is in correct balance" 

    while (payment*12 < owedBalance(payment, balance)): 
     payment += 10 

    return payment 

min_payment = CheckMinimumPayment(init_payment,init_balance) 

print("Lowest Payment: {}".format(min_payment))

来源

2013-02-25 16:55:53 askewchan

没有得到正确的输出...逻辑正确

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