[Solved] What is the most efficient way of replacing duplicate elements in a list B with unique elements from another list(list A) in Qt or C++?

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What is the most efficient way of replacing duplicate elements in a list B with unique elements from another list(list A) in Qt or C++?

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solved What is the most efficient way of replacing duplicate elements in a list B with unique elements from another list(list A) in Qt or C++?