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augusto-mantilla
77b9148c4c
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4 years ago | |
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| README.md | ||
README.md
prev_prime
Instructions
Write a function which returns the first prime number which is equal or inferior to the u64 passed as parameter.
If there are no primes inferior to the u64 passed as parameter the function should return 0.
Expected function
pub fn prev_prime(nbr: u64) -> u64 {
}
Usage
Here is a possible program to test your function :
fn main() {
println!("The previous prime number before 34 is: {}", prev_prime(34));
}
And its output :
$ cargo run
The previous prime number before 34 is: 31
$