()
| 7 | } |
| 8 | |
| 9 | fn main() { |
| 10 | let ns: [i64; 3] = [100000, 5000000, 1000000]; |
| 11 | let mut nanos = [0, 0, 0, 0, 0]; |
| 12 | for &num in ns.iter() { |
| 13 | for i in 0..5 { |
| 14 | let now = SystemTime::now(); |
| 15 | let _sum = sum_of_n(num); |
| 16 | let duration = now.elapsed().unwrap(); |
| 17 | nanos[i] = duration.as_nanos() as i32; |
| 18 | } |
| 19 | |
| 20 | let mut nanos_sum = 0; |
| 21 | for &nano in nanos.iter() { |
| 22 | nanos_sum += nano; |
| 23 | } |
| 24 | |
| 25 | let time = nanos_sum/(nanos.len() as i32); |
| 26 | println!("func used {time} ns"); |
| 27 | } |
| 28 | } |