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67 lines (60 loc) · 1.39 KB
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LeetCode020_Valid_Parentheses.cpp
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67 lines (60 loc) · 1.39 KB
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class Solution {
public:
bool isValid(string s) {
//¾µäÕ»ÀàÐÍ
stack<char> tmp;
for(int i = 0; i < s.size(); i++)
{
if(s[i] == '(' || s[i] == '[' || s[i] == '{')
{
tmp.push(s[i]);
continue;
}
if(tmp.size() == 0)
{
return false;
}
if(s[i] == ')')
{
if(tmp.top() == '(')
{
tmp.pop();
continue;
}
else
{
return false;
}
}
if(s[i] == ']')
{
if(tmp.top() == '[')
{
tmp.pop();
continue;
}
else
{
return false;
}
}
if(s[i] == '}')
{
if(tmp.top() == '{')
{
tmp.pop();
continue;
}
else
{
return false;
}
}
}
if(tmp.size() > 0)
{
return false;
}
return true;
}
};