对偶数按升序排序，然后按奇数降序排序

def sort_numbers(numbers):
    even_numbers = []
    odd_numbers = []

    # 将数字分为偶数和奇数两个列表
    for num in numbers:
        if num % 2 == 0:
            even_numbers.append(num)
        else:
            odd_numbers.append(num)

    # 对偶数列表进行升序排序
    even_numbers.sort()

    # 对奇数列表进行降序排序
    odd_numbers.sort(reverse=True)

    # 合并排序后的偶数列表和奇数列表
    sorted_numbers = even_numbers + odd_numbers

    return sorted_numbers

# 测试示例
numbers = [1, 4, 3, 2, 5, 6, 8, 7]
sorted_numbers = sort_numbers(numbers)
print(sorted_numbers)