328

2 files changed, 55 insertions, 0 deletions

diff --git a/328/go.mod b/328/go.mod
new file mode 100644
index 0000000..a6abc32
--- /dev/null
+++ b/328/go.mod
@@ -0,0 +1,3 @@
+module 328
+
+go 1.18
diff --git a/328/main.go b/328/main.go
new file mode 100644
index 0000000..64f4a6b
--- /dev/null
+++ b/328/main.go
@@ -0,0 +1,52 @@
+package main
+
+import "fmt"
+
+type ListNode struct {
+	Val  int
+	Next *ListNode
+}
+
+func dumpList(head *ListNode) {
+	for head.Next != nil {
+		fmt.Println(head.Val)
+		head = head.Next
+	}
+	fmt.Println(head.Val)
+	fmt.Println()
+}
+
+func oddEvenList(head *ListNode) *ListNode {
+	if head == nil {
+		return nil
+	}
+	odd, even := head, head.Next
+	evenHead := even
+	for even != nil && even.Next != nil {
+		odd.Next = even.Next
+		odd = odd.Next
+		even.Next = odd.Next
+		even = even.Next
+	}
+	odd.Next = evenHead
+	return head
+}
+
+func main() {
+	node1 := &ListNode{1, nil}
+	node2 := &ListNode{2, nil}
+	node3 := &ListNode{3, nil}
+	node4 := &ListNode{4, nil}
+	node5 := &ListNode{5, nil}
+	node1.Next = node2
+	node2.Next = node3
+	node3.Next = node4
+	node4.Next = node5
+	head := node1
+	head = oddEvenList(node1)
+	for head.Next != nil {
+		fmt.Println(head.Val)
+		head = head.Next
+	}
+	fmt.Println(head.Val)
+}