1 fn factorial_loop() -> i64 {
13 fn index_for_loop() -> usize {
15 let a = [0, 10, 20, 30];
22 fn for_loop() -> usize {
24 let a = [0, 10, 20, 30];
32 assert_eq!(factorial_loop(), 3628800);
33 assert_eq!(index_for_loop(), 60);
34 assert_eq!(for_loop(), 60);