用Python语言写下面这道题，非常感谢

Question

 

Answer 1

sentence = input()
# sentence = 'hello world nihao world hey hello java world hi python yeoman word'
#先把字符串分割成单个单词列表
list1 = sentence.split() 
#['hello', 'world', 'nihao', 'world', 'hey', 'hello', 'java', 'world', 'hi', 'python', 'yeoman', 'word']
print list1 

#把列表转为结合，为了去除重复的项
set1 = set(list1)   
#set(['java', 'python', 'word', 'nihao', 'hey', 'yeoman', 'hi', 'world', 'hello'])
print set1  

#把集合转为列表，集合元素没有顺序，没有索引属性，而列表有
list2 = list(set1)  
#['java', 'python', 'word', 'nihao', 'hey', 'yeoman', 'hi', 'world', 'hello']
print list2 

#新建一个空的字典
dir1 = {}

for x in range(len(list2)): 
    dir1[list2[x]] = 0  #字典值初始为0
    for y in range(len(list1)):
        if list2[x] == list1[y]:
            dir1[list2[x]] += 1