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7)Write a short Python function, first and last(data), that takes a sequence of one or more strings, and returns the first and last string lexicographically,

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7)Write a short Python function, first and last(data), that takes a sequence of one or more strings, and returns the first and last string lexicographically, in the form of a tuple of length two. Do not any built-in functions for your comparisons/determination of string ordering

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