3839. Number of Prefix Connected Groups

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You are given an array of strings words and an integer k. Two words a and b at distinct indices are prefix-connected if a[0..k-1] == b[0..k-1]. A connected group is a set of words such that each pair of words is prefix-connected. Return the number of connected groups that contain at least two words, formed from the given words. Note: - Words with length less than k cannot join any group and a

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solution.cppC++17

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