斐波那契数列的前20项

package com.alibaba.demo05;

public class lianxi1 {
    public static void main(String[] args) {
        int a = 1,b = 1;
        System.out.printf("%-15d %-15d",a,b);
        for (int i = 0; i < 19; i++) {
            a=a+b;
            b=a+b;
            System.out.printf("%-15d %-15d",a,b);
            if(i%2==0){
                System.out.println();
            }
        }
    }
}