牛客笔记
链表反转
private static ListNode reverseList(ListNode head) {
if (head == null) {
return null;
}
ListNode pre = null;
ListNode next = null;
while (head != null) {
next = head.next;
head.next = pre;
pre = head;
head = next;
}
return pre;
}
你点进去没打招呼他也会有提示的，之前我点进美的，还没打招呼，他马上给我发了不太合适哦
