Simplify Path

class Solution {
private:
    int index;
    string path;
    string getpath()
    {
        index++;
        string newpath="";
        while(index<path.length() && path[index]!=‘/‘)
        {
            newpath=newpath+path[index];
            index++;            
        }
        return newpath;
    }
public:
    string simplifyPath(string path) 
    {
        this->path=path;
        stack<string> stk;
        index=0;
        while(index<path.size())
        {
            string newpath=getpath();
            if(newpath=="..")
            {
                if(stk.empty()==false)
                    stk.pop();
                continue;
            }
            if(newpath=="." || newpath=="") continue;
            stk.push(newpath);
        }
        string result="";
        while(stk.empty()==false)
        {
            result=‘/‘+stk.top()+result;
            stk.pop();
        }
        if(result.length()==0) result="/";
        return result;
    }
};