Directory and File Size Queries | Dataford Interview Questions

Get total file size of a directory. Get file size of a path.

Asked in the Code screen stage. Problem 2.

Implement get_path_size(files, path). files is a dictionary mapping normalized absolute paths to either a nonnegative integer file size or null for a directory. Return the file size when path is a file, or the sum of all descendant file sizes when it is a directory. Directory entries include empty directories. Paths are separated by /, and a path is valid if it appears in files.

Constraints

1 <= len(files) <= 10^4
File sizes are nonnegative integers
Each path is normalized and uses / as the separator
Every requested path appears in files

Function Signature

def get_path_size(files, path):

Your question is Directory and File Size Queries. Start with the requirements in the Question tab.

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Problem

Get total file size of a directory. Get file size of a path.

Asked in the Code screen stage. Problem 2.

Constraints

1 <= len(files) <= 10^4
File sizes are nonnegative integers
Each path is normalized and uses / as the separator
Every requested path appears in files

Function Signature

def get_path_size(files, path):

Your question is Directory and File Size Queries. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.