力扣：234. 回文链表

LeetCode/src/main/java/com/code/leet/study/t20210207/IsPalindrome.java

@@ -0,0 +1,30 @@
+package com.code.leet.study.t20210207;
+
+import com.code.leet.entiy.ListNode;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * 请判断一个链表是否为回文链表。
+ */
+public class IsPalindrome {
+    public boolean isPalindrome(ListNode head) {
+        boolean bl = true;
+        List<Integer> list = new ArrayList<>();
+        while (head != null) {
+            list.add(head.val);
+            head = head.next;
+        }
+        int headIndex = 0;
+        int size = list.size();
+        while (headIndex < size - headIndex - 1) {
+            if (!list.get(headIndex).equals(list.get(size - headIndex - 1))) {
+                bl = false;
+                break;
+            }
+            headIndex++;
+        }
+        return bl;
+    }
+}