QA Automation & AI Testing Interview Kit(Python) with Arun raj Kathi

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Example Python Question & Answer

Question: How do you find duplicate elements in a list?

Answer:

def find_duplicates(items):

seen = set()

duplicates = set()

for item in items:

if item in seen:

duplicates.add(item)

else:

seen.add(item)

return list(duplicates)

print(find_duplicates([1, 2, 3, 2, 4, 1]))

Explanation:

The seen set stores values already encountered. If a value appears again, it is added to the duplicates set. This approach avoids unnecessary nested loops and provides an efficient solution.