From 7fbf4ea0b5679b83e637006b48ca1a287ebf3302 Mon Sep 17 00:00:00 2001
From: Stoycho Kyosev <stoycho.kk@gmail.com>
Date: Sat, 12 Nov 2022 18:37:07 +0200
Subject: add non const front & back

---
 Seminar05/LinkedList.hpp | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/Seminar05/LinkedList.hpp b/Seminar05/LinkedList.hpp
index 1281a43..58f8794 100644
--- a/Seminar05/LinkedList.hpp
+++ b/Seminar05/LinkedList.hpp
@@ -129,6 +129,9 @@ public:
     const T& front() const;
     const T& back() const;
 
+    T& front();
+    T& back();
+
     bool empty() const;
     size_t size() const;
 
@@ -291,6 +294,14 @@ const T& LinkedList<T>::front() const {
     return head->data;
 }
 
+template<class T>
+T& LinkedList<T>::front() {
+    if(empty())
+        throw std::runtime_error("Empty list!");
+    
+    return head->data;
+}
+
 template<class T>
 const T& LinkedList<T>::back() const {
     if(empty()) 
@@ -299,6 +310,14 @@ const T& LinkedList<T>::back() const {
     return tail->data;
 }
 
+template<class T>
+T& LinkedList<T>::back() {
+    if(empty()) 
+        throw std::runtime_error("Empty list!");
+
+    return tail->data;
+}
+
 template<class T>
 LinkedList<T>::~LinkedList() {
     free();
-- 
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