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// 71. Simplify Path
#include "leetcode.h"
// given a string 'path', which is an absolute path (starting with a slash) to a
// file or directory in a unix-style file system, convert it to the simplified
// canonical path
class Solution {
public:
string simplifyPath(string path) {
vector<string> stack;
string ans, tmp;
stringstream p(path);
while (getline(p, tmp, '/')) {
if (tmp == "" || tmp == ".")
continue;
if (!stack.empty() && tmp == "..")
stack.pop_back();
else if (tmp != "..")
stack.push_back(tmp);
}
for (auto s : stack)
ans += "/" + s;
return stack.empty() ? "/" : ans;
}
};
int main() {
Solution obj;
cout << obj.simplifyPath("/home/") << endl; // expect: /home/
cout << obj.simplifyPath("/../") << endl; // expect: /
cout << obj.simplifyPath("/home//foo/") << endl; // expect: /home/foo
}
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