Question

以下是我用于no_teen_sum和后续fixed_teen函数的代码。

第一个代码是我提交的 - 并适用于所有测试用例：

def no_teen_sum(a, b, c):
  # checks if value is a teen then child conditional checks whether
  # fix_teen passes the value, otherwise initialize the value as 0
  if 13 <= a <= 19:
    if fix_teen(a):
      a = a
    else:
      a = 0
  if 13 <= b <= 19:
    if fix_teen(b):
      b = b
    else:
      b = 0
  if 13 <= c <= 19:
    if fix_teen(c):
      c = c
    else:
      c = 0

  return a + b + c

调用的fix_teen函数：

def fix_teen(n):
  # checks if n is 15 or 16 but checking if it is found in the set 
  # written this way to be expandable without becoming verbose
  if n in {15, 16}:
    return True

然而，看着这个，我看到了很多重复，并意识到我可能误解了问题的内容。它在找到解决方案方面是有效的，但不是尽可能干净。所以我试着改进。

改进代码：

def no_teen_sum(a, b, c):
    fix_teen(a)
    fix_teen(b)
    fix_teen(c)

    return a + b + c

修改后的fix_teen函数：

def fix_teen(n):

    # checks if n is a teen
    if 13 <= n <= 19:

        # checks if n is 15 or 16 but checking if it is found in the set
        # if True then leave n as it is
        if n in {15, 16}:
            n = n
            return n

        # if it fails then n = 0
        else:
            n = 0
            return n

    # if n is not in the teens return it as is
    return n

我遇到的问题（例如（1,2,18）的测试用例是它返回21.它应该返回3.我尝试在主函数中的每个'fix_teen'调用之间放置print语句来查看它对a，b，c有什么价值，它只是将它们保留为（1,2,18）而不是（1,2,0）

奇怪的部分是如果我独立调用fixed_teen（18）它返回0.

Answer 1

你的no_teen_sum（a，b，c）函数返回一个+ b + c（字面意思是传递给函数的内容）！你应该使a，b和c等于fix_teen函数的结果，以获得所需的结果！

def no_teen_sum(a, b, c):
    a = fix_teen(a)
    b = fix_teen(b)
    c = fix_teen(c)

    return a + b + c

Answer 2

def no_teen_sum(a, b, c):
    return print(fix_teen(a) + fix_teen(b) + fix_teen(c))

def fix_teen(n):
    if n in (13, 14, 17, 18, 19):
        return 0
    return n

no_teen_sum(1, 2, 3)
no_teen_sum(2, 13, 1)
no_teen_sum(2, 1, 14)

Answer 3

def no_teen_sum(a, b, c):
  return fix_teen(a) + fix_teen(b) + fix_teen(c)

def fix_teen(n):
     teen = [13, 14, 17, 18, 19]
     if n in teen :
        return 0
     else:
        return n

python：codingbat no_teen_sum - 为什么我的函数没有按预期工作？

3 个答案: