Refactor Legacy Python | Dataford Interview Questions

Given an undocumented and inefficient legacy Python function in an online code-pad, perform a code review and refactor the code.

Write a cleaner, faster version of the function with the same behavior. Keep the public function signature unchanged, and preserve the expected input and output shapes used by the tests.

Function Signature

def refactor_legacy_function(data):

Input and Output

data: the function input used by the legacy implementation
return: the refactored function result with the same semantics as the original code

Constraints

1 <= len(data) <= 10^5
Elements of data are hashable
The refactored function must preserve the original output semantics

Function Signature

def refactor_legacy_function(data):

Your question is Refactor Legacy Python. 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.

Problem

Given an undocumented and inefficient legacy Python function in an online code-pad, perform a code review and refactor the code.

Write a cleaner, faster version of the function with the same behavior. Keep the public function signature unchanged, and preserve the expected input and output shapes used by the tests.

Function Signature

def refactor_legacy_function(data):

Input and Output

data: the function input used by the legacy implementation
return: the refactored function result with the same semantics as the original code

Constraints

1 <= len(data) <= 10^5
Elements of data are hashable
The refactored function must preserve the original output semantics

Function Signature

def refactor_legacy_function(data):

Your question is Refactor Legacy Python. 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.