LeetCode 1078. Bigram 分词
给出第一个词 first 和第二个词 second,考虑在某些文本 text 中可能以 “first second third” 形式出现的情况,其中 second 紧随 first 出现,third 紧随 second 出现。
对于每种这样的情况,将第三个词 “third” 添加到答案中,并返回答案。
示例 1:
输入:text = “alice is a good girl she is a good student”, first = “a”, second = “good”
输出:[“girl”,“student”]
示例 2:
输入:text = “we will we will rock you”, first = “we”, second = “will”
输出:[“we”,“rock”]
Code
def findOcurrences(self, text: str, first: str, second: str) -> List[str]:
t_list=text.split()#划分
res=[]
for i in range (1,len(t_list),1):
if t_list[i-1] == first and t_list[i] ==second:
if i+1 < len(t_list):
res.append(t_list[i+1])
return res
想法
字符串处理