Python:索引项目Euler 8

Question

当我试图用python回答这个问题时，我在创建的列表上遇到了索引问题。问题是：

1000位数字中13个相邻数字的最大乘积是什么？你知道吗

这是我的程序：

# solves problem 8 hopefully
def problem8():
    MAX = 0
    maybeMAX =0
    n = 73167176531330624919225119674426574742355349194934969835203127745063262395783180169848018694788518438858615607891129494954595017379583319528532088055111254069874715852386305071569329096329522744304355766896648950445244523161731856403098711121722383113622298934233803081353362766142828064444866452387493035890729629049156044077239071381051585930796086670172427121883998797908792274921901699720888093776657273330010533678812202354218097512545405947522435258490771167055601360483958644670632441572215539753697817977846174064955149290862569321978468622482839722413756570560574902614079729686524145351004748216637048440319989000889524345065854122758866688116427171479924442928230863465674813919123162824586178664583591245665294765456828489128831426076900422421902267105562632111110937054421750694165896040807198403850962455444362981230987879927244284909188845801561660979191338754992005240636899125607176060588611646710940507754100225698315520005593572972571636269561882670428252483600823257530420752963450
    lst = [] 
    while n != 0: ## This loop creates a list from the above number
        n,d =divmod(n,10)
        lst.append(d) #puts each value of the number onto the list as an integer
    lst.reverse()
    while (len(lst)> 12):
        i = lst[0]
        product = (lst[i]*lst[i+1]*lst[i+2]*lst[i+3]*lst[i+4]*lst[i+5]*lst[i+6]*lst[i+7]*lst[i+8]*lst[i+9]*lst[i+10]*lst[i+11]*lst[i+12])   
        maybeMAX = product
        if maybeMAX > MAX :
            MAX =maybeMAX
        lst.remove(lst[0])
    return MAX 
 sol8 = problem8()
 print "The greatest product of thirteen adjacent digits is {}".format(sol8)

这是我运行上述程序后收到的错误：

============== RESTART: C:\Python27\04 Project Euler 5,6,7,8.py ==============

Traceback (most recent call last):
  File "C:\Python27\04 Project Euler 5,6,7,8.py", line 94, in <module>
    sol8 = problem8()
  File "C:\Python27\04 Project Euler 5,6,7,8.py", line 77, in problem8
    product = (lst[i]*lst[i+1]*lst[i+2]*lst[i+3]*lst[i+4]*lst[i+5]*lst[i+6]*lst[i+7]*lst[i+8]*lst[i+9]*lst[i+10]*lst[i+11]*lst[i+12])
IndexError: list index out of range
>>>

我找不到任何其他问题来回答这个索引问题，所以任何代码方面的帮助都将不胜感激。谢谢。你知道吗

Answer 1

我的问题是声明i等于lst[0]，这使得i等于该索引处的值，因此在计算乘积的部分，它没有经过lst并使用这些值，它只是加上7，这是索引0中的原始值。你知道吗

所以我改变了：

while (len(lst)> 12):
    i = lst[0]

收件人：

while (len(lst)> 13):
    i = 0

计算出正确答案。你知道吗