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71. Simplify Path 2.cpp
53 lines (41 loc) · 1.11 KB
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71. Simplify Path 2.cpp
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// https://leetcode.com/problems/simplify-path/
class Solution
{
public:
string simplifyPath(string path)
{
string result = "";
stack<string> directories = getDirectories(path);
if (directories.empty())
return "/";
while (!directories.empty())
{
result = "/" + directories.top() + result;
directories.pop();
}
return result;
}
stack<string> getDirectories(string &path)
{
stack<string> directories;
string currentDirectory = "";
path = path + "/";
for (char &c : path)
{
if (c == '/')
{
if (currentDirectory == "..")
{
if (!directories.empty())
directories.pop();
}
else if (currentDirectory != "" && currentDirectory != ".")
directories.push(currentDirectory);
currentDirectory = "";
}
else
currentDirectory += c;
}
return directories;
}
};