def findMinAndMax(L): if L == []: return None,None else: min = max = L[0] for x in L: if min >= x: min = x if max <= x: max =x return min,max
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def findMinAndMax(L): if L == []: return None,None else: min = max = L[0] for x in L: if min >= x: min = x if max <= x: max =x return min,max