题解 | #矩形覆盖#

import java.util.*;
public class Solution {
    public int rectCover(int target) {
      if(target==0)  return 0;
        if(target==1)    return 1;
        if(target==2)    return 2;
        return rectCover(target-1)+rectCover(target-2);
    }
}