Question

How to declare and initialize a matrix with zeros in Rust

Answer 1

fn main() {
    let rows = 3;
    let cols = 4;
    let matrix = vec![vec![0; cols]; rows];

    for row in &matrix {
        println!("{}", row.iter().map(|&x| x.to_string()).collect::<Vec<_>>().join(" "));
    }

    println!("\n");

    for i in 0..rows {
        for j in 0..cols {
            print!("{} ", matrix[i][j]);
        }
        println!();
    }
}

 
 
/*
run:

0 0 0 0
0 0 0 0
0 0 0 0


0 0 0 0 
0 0 0 0 
0 0 0 0 

*/

 

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