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If I have a function in python, say show(B), how would I code it so that...

If I have a function in python, say show(B), how would I code it so that if B is a list like [3,3,4,0,0,8,2,0,0,5], it should return the elements in B that are not in range(len(B)). So the length of B in the given example is 10 so the range is from 0 to 9, so we want to return [0,1,2,5,6,9] since these are the values not in B. Thanks

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Answer #1 
def show(B):
    result = []
    for i in range(len(B)):
        if i not in B:
            result.append(i)
    return result


print(show([3, 3, 4, 0, 0, 8, 2, 0, 0, 5]))
# Note: only [1, 6, 7, 9] are not in the above list

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