Code Signal_练习题_depositProfit

You have deposited a specific amount of money into your bank account. Each year your balance increases at the same growth rate. With the assumption that you don't make any additional deposits, find out how long it would take for your balance to pass a specific threshold. Of course you don't want to wait too long, so you know that the answer is not greater than 6.

Example

For deposit = 100, rate = 20, and threshold = 170, the output should be
depositProfit(deposit, rate, threshold) = 3.

Each year the amount of money in your account increases by 20%. So throughout the years, your balance would be:

• year 0: 100;
• year 1: 120;
• year 2: 144;
• year 3: 172.8.

Thus, it will take 3 years for your balance to pass the threshold, so the answer is 3.

我的解答：

def depositProfit(deposit, rate, threshold):
    count = 0
    while deposit < threshold:
        deposit += deposit * rate * 0.01
        count += 1
    return count

写的一样...0.0

膜拜大佬