Common Substring

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A string is said to be a child of a another string if it can be formed by deleting 0 or more characters from the other string. Letters cannot be rearranged. Given two strings of equal length, what's the longest string that can be constructed such that it is a child of both? Example S1 = ‘ABCD’ S2 = ‘ABDC These strings have two children with maximum length 3, ABC and ABD. They can be form

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solution.cppC++17

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