Merge Nested Objects | Dataford Interview Questions

Write a function mergeObjects(obj1, obj2) that merges these two objects.

Treat both inputs as JSON-like dictionaries. Merge nested dictionaries recursively, let values from obj2 override conflicting values, replace arrays and primitive values directly, and do not mutate either input. Return a new dictionary.

Function signature: mergeObjects(obj1, obj2) Inputs and output are dictionaries containing nested dictionaries, arrays, strings, numbers, booleans, or None.

Constraints

0 <= number of keys in each object <= 10^4
Inputs contain only dictionaries, arrays, strings, numbers, booleans, or None
Nested dictionaries can have arbitrary depth within practical recursion limits
Neither input object may be mutated
When both conflicting values are dictionaries, merge them recursively; otherwise use obj2's value

Function Signature

def mergeObjects(obj1, obj2):

Your question is Merge Nested Objects. Start with the requirements in the Question tab.

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Problem

Write a function mergeObjects(obj1, obj2) that merges these two objects.

Function signature: mergeObjects(obj1, obj2) Inputs and output are dictionaries containing nested dictionaries, arrays, strings, numbers, booleans, or None.

Constraints

0 <= number of keys in each object <= 10^4
Inputs contain only dictionaries, arrays, strings, numbers, booleans, or None
Nested dictionaries can have arbitrary depth within practical recursion limits
Neither input object may be mutated
When both conflicting values are dictionaries, merge them recursively; otherwise use obj2's value

Function Signature

def mergeObjects(obj1, obj2):

Your question is Merge Nested Objects. 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.