Question

How to fill a vector with 1 and 0 in random locations with Rust

Answer 1

use rand::Rng;

fn fill_vector_with_random_1_and_0(vec: &mut [i32]) {
    let mut rng = rand::thread_rng();
    
    for i in 0..vec.len() {
        vec[i] = rng.gen_range(0..2); // Generates either 0 or 1
    }
}

fn main() {
    let size = 10;
    let mut v = vec![0; size];
    
    fill_vector_with_random_1_and_0(&mut v);
    
    println!("{:?}", v);
}


  
/*
run:
  
[0, 1, 0, 1, 0, 1, 0, 0, 1, 1]
 
*/

 

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