题解 | #斐波那契数列#
斐波那契数列
https://www.nowcoder.com/practice/ee5d403c1172487f8c7915b3c3d924c6
#include <iostream>
using namespace std;
int main() {
int n;
cin>>n;
if(n==1||n==2)
{
cout<<1;
return 0;
}
int *arr=new int[n+1];
arr[1]=1;
arr[2]=1;
for(int i=3;i<=n;i++)
{
arr[i]=arr[i-1]+arr[i-2];
}
cout<<arr[n];
delete []arr;
}
// 64 位输出请用 printf("%lld")
