Question

我正在尝试用数字替换单词来打印句子。例如，“这是一个测试，这是一个测试”将成为“1234 1234”。

这是我到目前为止所做的：

sentence_list = []
sentence = input('Input a sentence \n')
sentence_list.append(sentence)
print(sentence_list)
numbers = [val + '=' + str(i + 1) for i, val in enumerate(sentence.split())]
print(numbers)

但是，我不知道怎么去说明重复的单词，而且只打印数字而不是“[word = 1]”

Answer 1

与Max相同，只是更简单一点。

SentenceList=[]
sentence=input('Input a sentence \n')

sentenceSplit = sentence.split(' ')

for word in sentenceSplit:
    if word not in SentenceList:
        SentenceList.append(word)
    print SentenceList.index(word) + 1,

Answer 2

words_found = [] 

for word in input('Input a sentence \n').split():
    # Add each word to the list the first time it appears
    if word not in words_found:
        words_found.append(word)
    # Print the index in the last that the word appeared in
    print(words_found.index(word) + 1)

Answer 3

Max's solution很棒，因为它使用字典进行O（1）查找。可以使它变得更加简单

data = {}

for word in input('Input a sentence \n').split():
    if word not in data:
        data[word] = len(data) + 1
    print(data[word])

或使用dict.setdefault

data = {}

for word in input('Input a sentence \n').split():
    print(data.setdefault(word, len(data) + 1))

在句子中写一个数字

3 个答案: