有人可以向我解釋為什么這段代碼不起作用嗎？

Question

annual_salary = int(input("Your annual salary "))
semi_annual_raise = 0.07
r = 0.04
down_payment = 250000
epsilon = 100
low = 0
high = 10000
guess = (high + low)//2
best_saving_rate = (guess/10000)
months = 0
current_savings = 0
steps = 0

while abs(current_savings - down_payment) >= 100:
    for i in range(36):
        current_savings += best_saving_rate*(annual_salary/12) + (current_savings*r)/12
        months +=1
        if months%6 == 0:
            annual_salary = annual_salary + semi_annual_raise*annual_salary  
    if current_savings < down_payment:
        low = guess
    else:
        high = guess
    steps += 1
    guess = (high + low)//2
    best_saving_rate = float(guess/10000)
print(steps)
print(best_saving_rate)
print(current_savings)

該代碼應該為試圖在 36 個月內有足夠的錢支付 250000 美元的人找到最佳儲蓄率。 我使用二分搜索，我認為我在正確的軌道上，但它不會工作。 我認為問題在於可變電流節省不會在每次迭代時重新初始化，我不知道如何讓它做到這一點。 請幫忙。

Answer 1

為什么您希望每次迭代時current_savings都重置為0 ？ 您沒有在代碼中這樣做，那么什么會導致這種情況發生呢？ 同樣從代碼的外觀來看，您也應該將months重置為0 （盡管看起來for循環索引變量i實際上應該是月份）。

這修復了我可以看到的明顯錯誤：

while abs(current_savings - down_payment) >= 100:
    current_savings = 0   # add this
    for month in range(36):  # Change this
        current_savings += best_saving_rate * (annual_salary / 12) + (current_savings * r) / 12
        # months += 1  <-- remove this
        if months % 6 == 0: