Valid Parentheses
Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid.
The brackets must close in the correct order, "()" and "()[]{}" are all valid but "(]" and "([)]" are not.
解题思路:
比较简单,用栈即可。遇到左括号,入栈,遇到右括号,查看栈顶元素是否匹配。注意可能空栈的情况。
class Solution {
public:
bool isValid(string s) {
int len=s.length();
stack st;
for(int i=0; i
转载请注明: » [LeetCode] Valid Parentheses
<!--
-->
原文作者:;如有侵权,请联系管理员删除。