Directory Stack

You are tasked with implementing a basic directory navigation system. The user can enter commands: 'cd <directory>' to change the current directory (pushing it onto a stack) or 'cd ..' to go back to the parent directory (popping from the stack). The input will specify a sequence of commands, and your program must output the final directory, representing the current path as a list. Do not push to the stack for invalid commands. Please write a program that processes a list of commands and outputs the final directory path. Input Format: A single line of commands separated by commas. Output Format: A list of strings representing the current directory path. Example: Input: cd home,cd user,cd ..,cd documents Output: ['home', 'user', 'documents']