### Question:
IsPalindrome { public boolean isPalindrome(ListNode head) { if(head == null){ return true; } boolean result = true; ListNode slow = head; ListNode fast = head; while (true) { fast = fast.next; if (fast == null) { break; } fast = fast.next; if (fast == null) { break; } slow = slow.next; } ListNode middleHeader = slow.next; middleHeader = reverse(middleHeader); ListNode middleCurrent = middleHeader; ListNode startCurrent = head; while (middleCurrent != null){ if(middleCurrent.val != startCurrent.val){ result = false; break; } middleCurrent = middleCurrent.next; startCurrent = startCurrent.next; } slow.next = reverse(middleHeader); return result; }  boolean isPalindrome(ListNode head);  }### Answer:
@Test void test(){ IsPalindrome isPalindrome = new IsPalindrome(); for(int i = 0; i < cases.size(); i++){ assertEquals(results.get(i),isPalindrome.isPalindrome(cases.get(i))); } }