Add assignment 11

src/assignments/assignment11/linked_list.rs

@@ -0,0 +1,62 @@
+//! Singly linked list.
+//!
+//! Consult <https://doc.rust-lang.org/book/ch15-01-box.html>.
+
+use std::fmt::Debug;
+
+/// Node of the list.
+#[derive(Debug)]
+pub struct Node<T: Debug> {
+    /// Value of current node.
+    pub value: T,
+
+    /// Pointer to the next node. If it is `None`, there is no next node.
+    pub next: Option<Box<Node<T>>>,
+}
+
+impl<T: Debug> Node<T> {
+    /// Creates a new node.
+    pub fn new(value: T) -> Self {
+        Self { value, next: None }
+    }
+}
+
+/// A singly-linked list.
+#[derive(Debug)]
+pub struct SinglyLinkedList<T: Debug> {
+    /// Head node of the list. If it is `None`, the list is empty.
+    head: Option<Node<T>>,
+}
+
+impl<T: Debug> Default for SinglyLinkedList<T> {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+impl<T: Debug> SinglyLinkedList<T> {
+    /// Creates a new list.
+    pub fn new() -> Self {
+        Self { head: None }
+    }
+
+    /// Adds the given node to the front of the list.
+    pub fn push_front(&mut self, value: T) {
+        todo!()
+    }
+
+    /// Adds the given node to the back of the list.
+    pub fn push_back(&mut self, value: T) {
+        todo!()
+    }
+
+    /// Removes and returns the node at the front of the list.
+    pub fn pop_front(&mut self) -> Option<T> {
+        todo!()
+    }
+
+    /// Removes and returns the node at the back of the list.
+    pub fn pop_back(&mut self) -> Option<T> {
+        todo!()
+    }
+}