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Design In-Memory File System

Explore how to implement an in-memory file system that supports creating directories, adding content to files, listing files and folders in lexicographical order, and reading file contents. This lesson helps you build foundational skills for simulating file system behaviors within coding interviews.

Statement

Design an in-memory file system. The skeleton for the class FileSystem is provided to you. Simulate the following functions:

  • ls(String path): If path is a file path, return a list that only contains the file’s name. If it’s a directory path, return the list of files and directory names in this directory. Your function should return the output ...