- 题目要求
-
思路:
- 遍历字符串,遇到空格替换
- 因为字符串s长度可变,所以应用的是while循环,实时更新字符串的长度
- 残缺代码:
class Solution:
def replaceSpace(self, s: str) -> str:
cur, lenth = 0, len(s)
while cur < lenth:
if s[cur] == " ":
s = s[:cur] + "%20" + s[cur + 1:]
cur += 1
lenth = len(s)
return s
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