//To create a new, empty vector
fn main() {
let v: Vec<i32> = Vec::new();
}
//vector that holds the values you give it.
fn main() {
let v = vec![1, 2, 3];
}
let v: Vec<i32> = Vec::new(); // []
let v = vec![0; 3]; // [0, 0, 0]
let v = vec![1, 2, 3]; // [1, 2, 3]