From ac8e7bb848091a7849fb00675af537b981743719 Mon Sep 17 00:00:00 2001
From: Manuel Pineda <manuelpineda@google.com>
Date: Tue, 5 Jan 2021 12:08:55 +0100
Subject: [PATCH] Add 05.cc

---
 solved/LeetCode/Challenges/2020/January/05.cc | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 solved/LeetCode/Challenges/2020/January/05.cc

diff --git a/solved/LeetCode/Challenges/2020/January/05.cc b/solved/LeetCode/Challenges/2020/January/05.cc
new file mode 100644
index 00000000..022ea9ea
--- /dev/null
+++ b/solved/LeetCode/Challenges/2020/January/05.cc
@@ -0,0 +1,17 @@
+class Solution {
+public:
+    ListNode* deleteDuplicates(ListNode* head) {
+        if ((head == nullptr) || (head->next == nullptr)) {
+            return head;
+        }
+        int t = head->next->val;
+        if (head->val != t) {
+            head->next = deleteDuplicates(head->next);
+            return head;
+        }
+        while (head != nullptr && head->val == t) {
+            head = head->next;
+        }
+        return deleteDuplicates(head);
+    }
+};