61 accepted, 9ms

Author: aQua

Algorithms/0061.rotate-list/rotate-list.go

@@ -7,6 +7,10 @@ type ListNode struct {
 }
 
 func rotateRight(head *ListNode, k int) *ListNode {
+	if k == 0 || head == nil {
+		return head
+	}
+
 	end := head
 	// size 是 List 的长度
 	size := 1

Algorithms/0061.rotate-list/rotate-list_test.go

@@ -27,6 +27,15 @@ func Test_Problem0061(t *testing.T) {
 	ast := assert.New(t)
 
 	qs := []question{
+		question{
+			para{
+				[]int{},
+				1,
+			},
+			ans{
+				[]int{},
+			},
+		},
 
 		question{
 			para{