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util-types.py

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    • set-duplicatas.py 200 B
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    def duplicatas(L):
	s = set()
	for x in L:
		if x in s:
			return True
		s.add(x)
	return False

if __name__=="__main__": 
	assert duplicatas([3, 5, 3]) == True
	assert duplicatas([3, 5, 5]) == False