Add test and subject for exercise lalgebra_vector

rust/tests/lalgebra_vector_test/Cargo.lock

@@ -0,0 +1,19 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "lalgebra_scalar"
+version = "0.1.0"
+
+[[package]]
+name = "lalgebra_vector"
+version = "0.1.0"
+dependencies = [
+ "lalgebra_scalar",
+]
+
+[[package]]
+name = "lalgebra_vector_test"
+version = "0.1.0"
+dependencies = [
+ "lalgebra_vector",
+]

rust/tests/lalgebra_vector_test/Cargo.toml

@@ -0,0 +1,10 @@
+[package]
+name = "lalgebra_vector_test"
+version = "0.1.0"
+authors = ["Augusto <aug.ornelas@gmail.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+lalgebra_vector = { path = "../../../../rust-piscine-solutions/lalgebra_vector"}

rust/tests/lalgebra_vector_test/src/main.rs

@@ -0,0 +1,41 @@
+// A vector in linear algebra is define as "anything that can be added
+// and that can be multiplied by a scalar"
+// And the associated function dot that calculates the dot product
+// between two vectors
+// let vector = Vector(vec![0,3, 4]);
+// let vector_1 = Vector(vec![0,3,3]);
+// vector.dot(&vector_1) == Some(23);
+
+// The dot product between two vectors of different length it's not defined
+
+use lalgebra_vector::Vector;
+
+fn main() {
+	let vector_1: Vector<i64> = Vector(vec![1, 3, -5]);
+	let vector_2: Vector<i64> = Vector(vec![4, -2, -1]);
+	println!("{:?}", vector_1.dot(&vector_2));
+	println!("{:?}", vector_1 + &vector_2);
+}
+
+#[test]
+fn dot_product() {
+	let vector_1: Vector<i64> = Vector(vec![1, 3, -5]);
+	let vector_2: Vector<i64> = Vector(vec![4, -2, -1]);
+	let expected: i64 = 3;
+	assert_eq!(vector_1.dot(&vector_2), Some(expected));
+
+	let vector_1: Vector<i64> = Vector(vec![1, 3, -5]);
+	let vector_2: Vector<i64> = Vector(vec![4, -2]);
+	assert_eq!(vector_1.dot(&vector_2), None);
+}
+
+#[test]
+fn addition() {
+	let vector_1: Vector<i64> = Vector(vec![1, 3, -5]);
+	let vector_2: Vector<i64> = Vector(vec![4, -2, -1]);
+	assert_eq!(vector_1 + &vector_2, Some(Vector(vec![5i64, 1, -6])));
+
+	let vector_1: Vector<i64> = Vector(vec![1, 3, -5]);
+	let vector_2: Vector<i64> = Vector(vec![2, 4, -2, -1]);
+	assert_eq!(None, vector_1 + &vector_2);
+}

subjects/lalgebra_vector/README.md

@@ -0,0 +1,51 @@
+## lalgebra_vector
+
+### Instructions
+
+A vector in linear algebra is define as "anything that can be added and that can be multiplied by a scalar"
+
+And the associated function dot that calculates the dot product between two vectors
+
+The dot product between two vectors of different length it's not defined
+
+Note: `Vector` must implement Debug, Clone, Eq, PartialEq.
+
+### Expected Functions and Structure
+
+```rust
+pub struct Vector<T: Scalar>(pub Vec<T>);
+
+use std::ops::Add;
+
+impl Add for Vector<T> {
+}
+
+impl Vector<T> {
+	pub fn new() -> Self {
+	}
+
+	pub fn dot(&self, other: &Self) -> Option<T> {
+}
+```
+
+### Usage
+
+Here is a program to test your function.
+
+```rust
+fn main() {
+	let vector_1: Vector<i64> = Vector(vec![1, 3, -5]);
+	let vector_2: Vector<i64> = Vector(vec![4, -2, -1]);
+	println!("{:?}", vector_1.dot(&vector_2));
+	println!("{:?}", vector_1 + &vector_2);
+}
+```
+
+And its output
+
+```console
+student@ubuntu:~/[[ROOT]]/test$ cargo run
+Some(3)
+Some(Vector([5, 1, -6]))
+tudent@ubuntu:~/[[ROOT]]/test$
+```