正则表达式不是正确的工具。手动扫描字符串。
伪代码：
depth = 0for character in some_string: depth += character == '(' depth -= character == ')' if depth < 0: breakif depth != 0: print "unmatched parentheses"
正则表达式不是正确的工具。手动扫描字符串。
伪代码：
depth = 0for character in some_string: depth += character == '(' depth -= character == ')' if depth < 0: breakif depth != 0: print "unmatched parentheses"名师互学网 版权所有 (c)2021-2022 ICP备案号：晋ICP备2021003244-6号
