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top-100-liked/24/24_test.go

@@ -0,0 +1,44 @@
+package top100liked
+
+import (
+	"fmt"
+	"testing"
+)
+
+// https://leetcode.cn/problems/palindrome-linked-list/description/?envType=study-plan-v2&envId=top-100-liked
+
+type ListNode struct {
+	Val  int
+	Next *ListNode
+}
+
+func isPalindrome(head *ListNode) bool {
+	vals := []int{}
+	for ; head != nil; head = head.Next {
+		vals = append(vals, head.Val)
+	}
+	n := len(vals)
+	for i, v := range vals[:n/2] {
+		if v != vals[n-1-i] {
+			return false
+		}
+	}
+	return true
+}
+
+func TestS24(t *testing.T) {
+	input := ListNode{
+		Val: 1,
+		Next: &ListNode{
+			Val: 2,
+			Next: &ListNode{
+				Val: 2,
+				Next: &ListNode{
+					Val:  1,
+					Next: nil,
+				},
+			},
+		},
+	}
+	fmt.Println(isPalindrome(&input))
+}