规范格式

leetcode/0876.Middle-of-the-Linked-List/876. Middle of the Linked List.go

@@ -0,0 +1,38 @@
+package leetcode
+
+import (
+	"github.com/halfrost/LeetCode-Go/structures"
+)
+
+// ListNode define
+type ListNode = structures.ListNode
+
+/**
+ * Definition for singly-linked list.
+ * type ListNode struct {
+ *     Val int
+ *     Next *ListNode
+ * }
+ */
+
+func middleNode(head *ListNode) *ListNode {
+	if head == nil || head.Next == nil {
+		return head
+	}
+	p1 := head
+	p2 := head
+	for p2.Next != nil && p2.Next.Next != nil {
+		p1 = p1.Next
+		p2 = p2.Next.Next
+	}
+	length := 0
+	cur := head
+	for cur != nil {
+		length++
+		cur = cur.Next
+	}
+	if length%2 == 0 {
+		return p1.Next
+	}
+	return p1
+}