From aca9505dfc6c5869dba63d2f5186b7689bd80a6c Mon Sep 17 00:00:00 2001
From: vipin joshi <vpnjsh55@gmail.com>
Date: Sun, 30 Jun 2024 10:24:53 +0530
Subject: [PATCH] box smart pointer

---
 exercises/19_smart_pointers/box1.rs | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/exercises/19_smart_pointers/box1.rs b/exercises/19_smart_pointers/box1.rs
index 513e7da..65aaf99 100644
--- a/exercises/19_smart_pointers/box1.rs
+++ b/exercises/19_smart_pointers/box1.rs
@@ -18,14 +18,16 @@
 //
 // Execute `rustlings hint box1` or use the `hint` watch subcommand for a hint.
 
-// I AM NOT DONE
 
 #[derive(PartialEq, Debug)]
+
 pub enum List {
-    Cons(i32, List),
+    Cons(i32, Box<List>),
     Nil,
 }
 
+use crate::List::{Cons, Nil};
+
 fn main() {
     println!("This is an empty cons list: {:?}", create_empty_list());
     println!(
@@ -35,11 +37,11 @@ fn main() {
 }
 
 pub fn create_empty_list() -> List {
-    todo!()
+    Nil
 }
 
 pub fn create_non_empty_list() -> List {
-    todo!()
+   Cons(1, Box::new(Cons(2, Box::new(Cons(3, Box::new(Nil))))))
 }
 
 #[cfg(test)]