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README.md | 4 years ago |
README.md
matrix_ops
Instructions
In this exercise you will define the basic operations with a matrix starting by implementing the std::ops::Add
trait
Define the operation + (by defining the trait std::ops::Add) for two matrices. Remember that two matrices can only be added if they have the same size. Therefore the add method must handle the possibility of failure by returning an Option.
You will be using your own Matrix
and Scalar
defined in the matrix
and the lalgebra_scalar
exercises.
Expected Function
use crate::{Matrix, Scalar};
use std::ops::{ Add, Sub };
impl Add for Matrix {
}
impl Sub for Matrix {
}
Usage
Here is a program to test your function
use matrix_ops::*;
fn main() {
let matrix = Matrix(vec![vec![8, 1], vec![9, 1]]);
let matrix_2 = Matrix(vec![vec![1, 1], vec![1, 1]]);
println!("{:?}", matrix + matrix_2);
let matrix = Matrix(vec![vec![1, 3], vec![2, 5]]);
let matrix_2 = Matrix(vec![vec![3, 1], vec![1, 1]]);
println!("{:?}", matrix - matrix_2);
let matrix = Matrix(vec![vec![1, 1], vec![1, 1]]);
let matrix_2 = Matrix(vec![vec![1, 1, 3], vec![1, 1]]);
println!("{:?}", matrix - matrix_2);
let matrix = Matrix(vec![vec![1, 3], vec![9, 1]]);
let matrix_2 = Matrix(vec![vec![1, 1, 3], vec![1, 1]]);
println!("{:?}", matrix + matrix_2);
}
And its output
student@ubuntu:~/[[ROOT]]/test$ cargo run
Some(Matrix([[9, 2], [10, 2]]))
Some(Matrix([[-2, 2], [1, 4]]))
None
None
student@ubuntu:~/[[ROOT]]/test$