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Mentor reply~1 second
app.thecodemine.org/playground
main.py · guided
1# find values that repeat 2def find_duplicates(items): 3 seen = set() 4 dups = [] 5 for x in items: 6 if x in seen: 7 dups.append(x) 8 else: 9 seen.add(x) 10 return dups
● AI Mentor
AI
Solid logic. Your solution runs in O(n). Can you spot what changes if we return a set instead of a list?
You
The output has no duplicate repeats?
AI
Exactly. Try the refactor and I'll review it. Hint: list(set(dups)).
You
Done — tests passing!
All tests passing12 / 12 checks

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