Python:编写一个程序来查找最大价格下降的时间段

# 价格列表，每个元素代表每天的价格
prices = [10, 8, 6, 4, 5, 7, 9, 3, 2, 1]

# 初始化最大下降的价格差、最大下降的价格差的开始时间和结束时间
max_diff = 0
start_time = 0
end_time = 0

# 遍历价格列表，查找最大下降的价格差
for i in range(len(prices)):
    for j in range(i+1, len(prices)):
        diff = prices[i] - prices[j]
        if diff > max_diff:
            max_diff = diff
            start_time = i
            end_time = j

# 输出结果
print("最大价格下降的时间段为：第{}天至第{}天，价格下降了{}元。".format(start_time+1, end_time+1, max_diff))