fn factorial_loop() -> i64 { | |
let mut product = 1; | |
let mut i = 1; | |
while i <= 10 { | |
product *= i; | |
i += 1; | |
} | |
product | |
} | |
fn index_for_loop() -> usize { | |
let mut sum = 0; | |
let a = [0, 10, 20, 30]; | |
for i in 0..a.len() { | |
sum += a[i]; | |
} | |
sum | |
} | |
fn for_loop() -> usize { | |
let mut sum = 0; | |
let a = [0, 10, 20, 30]; | |
for &n in &a { | |
sum += n; | |
} | |
sum | |
} | |
fn main() { | |
assert_eq!(factorial_loop(), 3628800); | |
assert_eq!(index_for_loop(), 60); | |
assert_eq!(for_loop(), 60); | |
} |