Gift for twins

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Uncle Charlie decided to suprise twins Alice and Bob on their birthday. He have to buy gifts for their birthday.Every gift has a value denoting its beauty. To be impartial to twins, he have to minimise the absolute difference of the beauty(denoted by B) of gifts. Charlie have to select two gifts from the given N gifts in store.Print the minimum possible absolute difference of gifts selected by Cha

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solution.cppC++17

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