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/**

* Example method from Chapter 6.

*/

public class Series {

public static int fibonacci(int n) {

if (n == 1 || n == 2) {

return 1;

}

return fibonacci(n - 1) + fibonacci(n - 2);

}

public static void main(String[] args) {

if (fibonacci(1) != 1) {

System.err.println("fibonacci(1) is incorrect");

}

if (fibonacci(2) != 1) {

System.err.println("fibonacci(2) is incorrect");

}

if (fibonacci(3) != 2) {

System.err.println("fibonacci(3) is incorrect");

}

}

}