Update and rename 86. Partition List.cpp to 086.Partition-List_v1.cpp

Author: wisdompeak

Linked_List/086.Partition-List/086.Partition-List_v1.cpp

@@ -0,0 +1,36 @@
+/**
+ * Definition for singly-linked list.
+ * struct ListNode {
+ *     int val;
+ *     ListNode *next;
+ *     ListNode(int x) : val(x), next(NULL) {}
+ * };
+ */
+class Solution {
+public:
+    ListNode* partition(ListNode* head, int x) 
+    {
+        ListNode* h1 = new ListNode(0);
+        ListNode* h2 = new ListNode(0);
+        ListNode* p = h1;
+        ListNode* q = h2;
+
+        while (head!=NULL)
+        {
+            if (head->val<x)
+            {
+                p->next = head;                
+                p = p->next;
+            }
+            else
+            {
+                q->next= head;
+                q = q->next;
+            }
+            head = head->next;
+        }
+        p->next = h2->next;
+        q->next = NULL;
+        return h1->next;        
+    }
+};