Perceptron.java: Implement the Perceptron constructor, Perceptron(int n), and the method, int numberOfInputs(). a. Test: In the main() method, instantiate a few Perceptron objects and print the number of inputs for each object. 2. Implement the String toString() method. a. Test: In the main() method, print the various Perceptron objects. What should the output be for a newly instantiated Perceptron object? 3. Implement the double weightedSum(double[] x) method. a. Test: In the main() method, print the result of invoking the weightedSum method on the various Perceptron objects (using, of course, appropriately sized arrays. 4. Implement the int predict(double[] x) method. 5. Implement the void train(double[] x, int label) method. Note - train should call predict.

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