2. 코드

package Test;

public class JumpCase {
    public static void main(String[] args) {
        JumpCase jc = new JumpCase();
        for ( int inx=0; inx<10; inx++ ) {
            System.out.println((inx+1) + " = " + jc.jumpCase(inx+1));
        }
    }

    private int jumpCase(int i) {
        int sum = 0;

        if ( i == 1 || i == 2 ) {
            sum = i;
        } else {
            for (int inx = 3; inx <= i; inx++) {
                sum = jumpCase(inx-2)+jumpCase(inx-1);
            }
        }
        return sum;
    }
}