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.
In a Unix-style file system, a period '.' refers to the current directory, a double period '..' refers to the directory up a level, and any multiple consecutive slashes (i.e. '//') are treated as a single slash '/'. For this problem, any other format of periods such as '...' are treated as file/directory names.
The canonical path should have the following format:
\n\n'/'.'/'.'/'.'.' or double period '..')Return the simplified canonical path.
\n\n\n
Example 1:
\n\n\nInput: path = "/home/"\nOutput: "/home"\nExplanation: Note that there is no trailing slash after the last directory name.\n\n\n
Example 2:
\n\n\nInput: path = "/../"\nOutput: "/"\nExplanation: Going one level up from the root directory is a no-op, as the root level is the highest level you can go.\n\n\n
Example 3:
\n\n\nInput: path = "/home//foo/"\nOutput: "/home/foo"\nExplanation: In the canonical path, multiple consecutive slashes are replaced by a single one.\n\n\n
\n
Constraints:
\n\n1 <= path.length <= 3000path consists of English letters, digits, period '.', slash '/' or '_'.path is a valid absolute Unix path.Compiled with clang 11 using the latest C++ 20 standard.
Your code is compiled with level two optimization (-O2). AddressSanitizer is also enabled to help detect out-of-bounds and use-after-free bugs.
Most standard library headers are already included automatically for your convenience.
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Python 2.7.12.
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\\r\\n\\r\\nFor Map/TreeMap data structure, you may use sortedcontainers library.
\\r\\n\\r\\nNote that Python 2.7 will not be maintained past 2020. For the latest Python, please choose Python3 instead.
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\\r\\nvoid delete_user(struct hash_entry *user) {\\r\\n HASH_DEL(users, user); \\r\\n}\\r\\n\\r\\n\"], \"csharp\": [\"C#\", \"\"], \"javascript\": [\"JavaScript\", \"Node.js 16.13.2.
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Some common data structure implementations are provided in the Algorithms module: https://www.rubydoc.info/github/kanwei/algorithms/Algorithms
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Most libraries are already imported automatically for your convenience, such as array, bisect, collections. If you need more libraries, you can import it yourself.
\\r\\n\\r\\nFor Map/TreeMap data structure, you may use sortedcontainers library.
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\\r\\n\\r\\nYour code will be run directly without compiling
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