Create Reverse Linked List.cpp

Author: sanyathisside

LeetCode/Reverse Linked List.cpp

@@ -0,0 +1,28 @@
+/**
+ * Definition for singly-linked list.
+ * struct ListNode {
+ *     int val;
+ *     ListNode *next;
+ *     ListNode() : val(0), next(nullptr) {}
+ *     ListNode(int x) : val(x), next(nullptr) {}
+ *     ListNode(int x, ListNode *next) : val(x), next(next) {}
+ * };
+ */
+
+//recursive
+class Solution {
+public:
+    ListNode* reverseList(ListNode* head) {
+        ListNode*C = head;
+        ListNode*P = NULL;
+        ListNode*N;
+        while(C!=NULL){
+        N = C->next;
+        C->next = P;
+        P = C;
+        C= N;
+        }
+        head = P;
+        return head;
+    }
+};