Answer
Shallow copy copies references; objects shared.
Deep copy duplicates all objects; independent copies.
Deep copy duplicates all objects; independent copies.
Quick Answer
Shallow copy: creates a new object but copies reference fields by reference - the copy and original share the same nested objects. Modifying a nested object through either copy affects both. Deep copy: recursively copies all objects - completely independent copy. Shallow copy is fast but risky for mutable nested objects. Use serialization or copy constructors for deep copies.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ