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【已解决】【问题】这两份代码的区别在哪？

2018/1/4镜像同步4 回复

楼主小白，最近在上MIT6.00.1x那个入门课。中期考试有一道题是根据给出的功能描述实现函数。 ```Python def score(word, f): """ word, a string of length > 1 of alphabetical characters (upper and lowercase) f, a function that takes in two int arguments and returns an int Returns the score of word as defined by the method: 1) Score for each letter is its location in the alphabet (a=1 ... z=26) times its distance from start of word. Ex. the scores for the letters in 'adD' are 1*0, 4*1, and 4*2. 2) The score for a word is the result of applying f to the scores of the word's two highest scoring letters. The first parameter to f is the highest letter score, and the second parameter is the second highest letter score. Ex. If f returns the sum of its arguments, then the score for 'adD' is 12 """ ``` 然后，我就这样写了 ```Python def score(word, f): word = str.lower(word) highest1 = ord(word[1]) - 96 highest2 = 0 for i, l in enumerate(word): l_score = i * (ord(l) - 96) if highest2 < l_score <= highest1: highest2 = l_score elif l_score > highest1: highest2 = highest1 highest1 = l_score return f(highest1, highest2) ``` 但总是有部分测试过不了，代码有什么问题吗？在网上搜了一下，有人是这样写的，但我感觉没什么区别啊。但是这份代码强调不能将字符串小写。。 ``` def score(word, f): # first need to calculate the score of each letter in word, store it in a list import string scorelist=[0]*len(word) # cannot convert to all lower case or all upper case!!! loop_tracker=0 for char in word: loop_tracker+=1 if char.islower(): alphabet_location=string.ascii_lowercase.find(char)+1 #index=word.find(char) # note here cannot use find() to get the index of the char, otherwise only return the index of 1st char index=loop_tracker-1 scorelist.extend([alphabet_location*index]) else: alphabet_location=string.ascii_uppercase.find(char)+1 index=loop_tracker-1 scorelist.extend([alphabet_location*index]) max_score=max(scorelist) scorelist.remove(max_score) next_max=max(scorelist) #print(max_score,next_max) return f(max_score,next_max) ```

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