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| class Solution {
public:
string simplifyPath(string path) {
vector<string> v;
istringstream input(path);
string s;
while (getline(input, s, '/')) {
if (s.empty() || s == ".") continue;
if (s == "..") {
if (!v.empty()) {
v.pop_back();
}
} else {
v.push_back(s);
}
}
if (v.empty()) return "/";
string res;
for (const auto &s : v) {
res = res + "/" + s;
}
return res;
}
};
|