first commit

.gitignore

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+/target

Cargo.lock

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+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "cfg-if"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
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+
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+checksum = "c9495705279e7140bf035dde1f6e750c162df8b625267cd52cc44e0b156732c8"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "wasi",
+]
+
+[[package]]
+name = "libc"
+version = "0.2.85"
+source = "registry+https://github.com/rust-lang/crates.io-index"
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+
+[[package]]
+name = "play-loto"
+version = "0.1.0"
+dependencies = [
+ "rand",
+]
+
+[[package]]
+name = "ppv-lite86"
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+dependencies = [
+ "libc",
+ "rand_chacha",
+ "rand_core",
+ "rand_hc",
+]
+
+[[package]]
+name = "rand_chacha"
+version = "0.3.0"
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+dependencies = [
+ "ppv-lite86",
+ "rand_core",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c026d7df8b298d90ccbbc5190bd04d85e159eaf5576caeacf8741da93ccbd2e5"
+dependencies = [
+ "getrandom",
+]
+
+[[package]]
+name = "rand_hc"
+version = "0.3.0"
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+dependencies = [
+ "rand_core",
+]
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+[[package]]
+name = "wasi"
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Cargo.toml

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+[package]
+name = "play-loto"
+version = "0.1.0"
+authors = ["Patrick MARIE <pm@mkz.me>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+rand = "0.8.3"

src/main.rs

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+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);
+}