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solution.cpp
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solution.cpp
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class Solution
{
public:
string simplifyPath(string path)
{
stack<string> s;
string str;
for(int i = 0; i < path.size(); i++)
{
if (path[i] == '/')
{
if (str == "..")
{
if (!s.empty())
s.pop();
}
else if (str != "." && str != "")
{
s.push(str);
}
str = "";
}
else
{
str += path[i];
}
}
if (str == "..")
{
if (!s.empty())
s.pop();
}
else if (str != "." && str != "")
s.push(str);
if (s.empty())
return "/";
string ret;
while(!s.empty())
{
ret = "/" + s.top() + ret;
s.pop();
}
return ret;
}
};