【追求进步】矩形覆盖

题目描述

public class Solution {
public int RectCover(int target) {
if(target==1||target==0){
return 1;
}
if(target==2){
return 2;
}
int fn1=1,fn2=2;
int currentnum=0;
for(int i=3;i<=target;i++){
currentnum=fn1+fn2;
fn1=fn2;
fn2=currentnum;
}
return currentnum;
}
}