# # 代码中的类名、方法名、参数名已经指定,请勿修改,直接返回方法规定的值即可 # # # @param s string字符串 # @return bool布尔型 # class Solution: def isValidPairing(self , s: str) -> bool: # write code here s_list = list(s) print(s_list) i = 0 j = 1 d = {"A":"B","C":"D"} while True: if s_list[i] == &...