面试题-10-3-矩形覆盖

public class Solution {
    public int RectCover(int target) {
        while(target>0){
            if(target==1){
                return 1;
            }
            if(target==2){
                return 2;
            }
            else
                return (RectCover(target-1)+RectCover(target-2));
        }
        return 0;
    }
}