reverse_string.py 源码
from typing import List
# 反转字符串
class Solution:
def reverseString_1(self, s: List[str]) -> None:
"""
Do not return anything, modify s in-place instead.
"""
s.reverse()
def reverseString_2(self, s: List[str]) -> None:
i, j = 0, len(s) - 1
while i < j:
s[i], s[j] = s[j], s[i]
i, j = i + 1, j - 1