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Write a method that transforms an athlete's pulse rate into one of three
integers: if the rate is less than 60, the value returned by the method
is to be -1; if the rate is more than 80, the value returned is to
be 1; otherwise, the value returned is to be 0. Then, write
another method that transforms an athlete's body fat as a percentage of
weight into one of three integers: if the athlete's body-fat percentage is
less than 10, the value returned is to be -1; if it is more than 20,
the value returned is to be 1; otherwise, the value returned is to
be 0.