20.Valid Parentheses (Stack)
摘要:
Given a string containing just the characters'(',')','{','}','['and']', determine if the input string is valid.The brackets must close in the correct ... 阅读全文
posted @ 2015-07-29 21:09 joannae 阅读(281) 评论(0) 推荐(0) 编辑