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| bool isValid(string s) {
stack<char> par;
char tmp;
for (int i = 0; i < s.length(); i++)
{
tmp = s[i];
if(tmp=='('||tmp=='['||tmp=='{')
par.push(s[i]);
else
{
if (par.empty())
return false;
char top = par.top();
switch (s[i])
{
case ')':
if (top != '(')
return false;
break;
case ']':
if (top != '[')
return false;
break;
case '}':
if (top != '{')
return false;
break;
default:
return false;
}
par.pop();
}
}
if (par.empty())
return true;
else
return false;
}
|