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Problem 11: Canonical Path Canonicalizer (Simplify Path)

Problem Statement

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.
  • Multiple consecutive slashes (e.g., '//') are treated as a single slash '/'.

Input Format

  • A string path.

Example

Input: path = "/home//foo/"
Output: "/home/foo" Input: path = "/../"
Output: "/"