代码： ！！动态规划基础版完结撒花🎉 class Solution {public int numTilings(int n) {long MOD = 1000000007;int[] dp = new int[n+1];dp[0]=1;for(int i=1;i<=n;i++){dp[i]+=dp[i-1]%MOD;dp[i]%=MOD;if(i>=2){dp[i]+=dp[i-2]%MO