Question

How to convert a specific column of a decimal matrix to a string in Rust

Answer 1

fn convert_column_to_string(matrix: &[Vec<i32>], col: usize) -> String {
    matrix
        .iter()
        .map(|row| row[col].to_string())
        .collect::<Vec<_>>()
        .join(" ")
}

fn main() {
    let matrix = vec![
        vec![4, 7, 9, 18, 29, 0],
        vec![1, 9, 18, 99, 4, 3],
        vec![9, 17, 89, 2, 7, 5],
        vec![19, 49, 6, 1, 9, 8],
        vec![29, 4, 7, 9, 18, 6],
    ];

    let col = 3; 
    let result = convert_column_to_string(&matrix, col);

    println!("{}", result);
}



/*
run:

18 99 2 1 9

*/

 

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