剑指offer——变态跳台阶

public class Solution {    public int JumpFloorII(int target) {        return (int)Math.pow(2, target);    }//    public static void main(String[] args) {//        Solution solution = new Solution();//        for(int i = 1; i <= 20; ++i) {//            System.out.println(solution.JumpFloorII(i) + " " );//        }//    }}