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- Input:
- [("MLGuy42", "andrew@gmail.com", "123-4567"),
- ("CS229DungeonMaster", "123-4567", "ml@stanford.edu"),
- ("Doomguy", "john@oculus.com", "carmack@gmail.com"),
- ("andrew26", "andrew@gmail.com", "mlguy@gmail.com")]
- Output:
- [[0, 1, 3], [2]]
- def find_duplicates(user_info):
- results = list()
- seen = dict()
- for i, user in enumerate(user_info):
- first_seen = True
- key_info = None
- for info in user:
- if info in seen:
- first_seen = False
- key_info = info
- break
- if first_seen:
- results.append([i])
- pos = len(results) - 1
- else:
- index = seen[key_info]
- results[index].append(i)
- pos = index
- for info in user:
- seen[info] = pos
- return results
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