添加新题目

链表/反转链表/main.go

@@ -0,0 +1,25 @@
+package main
+
+type ListNode struct {
+	Val  int
+	Next *ListNode
+}
+
+func main() {
+
+}
+func reverseList(head *ListNode) *ListNode {
+	pre := (*ListNode)(nil)
+	res := (*ListNode)(nil)
+	for head != nil {
+		next := head.Next
+		head.Next = pre
+		pre = head
+		if next == nil {
+			res = head
+			break
+		}
+		head = next
+	}
+	return res
+}