first commit

src/main.rs

@@ -0,0 +1,46 @@
+use std::fmt;
+use rand::Rng;
+use std::iter::FromIterator;
+
+struct Numbers {
+    numbers: Vec<u8>
+}
+
+fn get_numbers(numbers: &Vec<u8>, size: usize) -> Numbers {
+    let mut picked : Vec<u8> = vec![];
+    let mut numbers = numbers.clone();
+
+    let mut rng = rand::thread_rng();
+
+    for _idx in 0..size {
+        let n : usize = rng.gen::<usize>() % numbers.len();
+        picked.push(numbers.remove(n.into()));
+    }
+    picked.sort();
+
+    Numbers { numbers: picked }
+}
+
+impl fmt::Display for Numbers {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        let s = self.numbers.iter().fold(String::from(""), |mut s, x| {
+            if s != "" {
+                s.push_str(", ");
+            }
+            s.push_str(&format!("{}", x).to_string());
+            s
+        });
+
+        write!(f, "{}", s)
+    }
+}
+
+fn main() {
+    let numbers : Vec<u8> = Vec::from_iter(1..=50_u8);
+    let stars : Vec<u8> = Vec::from_iter(1..=12_u8);
+
+    let picked_numbers = get_numbers(&numbers, 5);
+    let picked_stars = get_numbers(&stars, 2);
+
+    println!("Numbers: {} / Stars: {}", picked_numbers, picked_stars);
+}