Answers for "number of trailing zeros in 10000 factorial"

number of trailing zeros in a factorial of a number.

// Number of trailing zeros in a factorial of a number

fn zeros(mut n: u64) -> u64 {
    let mut zeros = 0;
    while n > 0 {
        n /= 5;
        zeros += n;
    }
    zeros
}

fn main() {
    println!("Number of trailing zeros = {} ", zeros(14));  // 2
    println!("Number of trailing zeros = {} ", zeros(30));  // 7
}