Question

How to write an algorithm that adds the odd digits of one number to the end of a second number in Rust

Answer 1

fn add_odd_digits(n: i32, second_n: i32) -> i32 {
    let mut multiply = 1;
    let mut odd = 0;
    let mut n = n;

    while n != 0 {
        if n % 2 != 0 {
            odd += (n % 10) * multiply;
            multiply *= 10;
        }
        
        n /= 10;
    }

    second_n * multiply + odd
}

fn main() {
    let n = 12734;
    let second_n = 100;

    println!("{}", add_odd_digits(n, second_n));
}




/*
run:
  
100173
  
*/

 

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