Question

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

Answer 1

use std::fmt::Write;

fn convert_row_of_matrix_to_string(matrix: &[Vec<i32>], row: usize) -> String {
    let mut result = String::new();
    let cols = matrix[0].len();

    for j in 0..cols {
        write!(&mut result, "{} ", matrix[row][j]).unwrap();
    }

    result.trim().to_string()
}

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 row = 2;
    
    let str = convert_row_of_matrix_to_string(&matrix, row);
    
    println!("{}", str);
}




/*
run:

9 17 89 2 7 5

*/

 

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