Gopal and his Task

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Gopal obviously is the leader of the class.His class mates are standing in line.His teacher has assigned him the task of arranging the students , into ascending order of their heights.But unfortunately ,Gopal knows only one thing, select k consecutive students, reverse their order. Finally, he wants their heights to be in the sequence of ascending order. Gopal wonders what is the fewest number

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solution.cppC++17

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