本篇内容介绍了“Java怎么遍历最后一个数”的有关知识,在实际案例的操作过程中,不少人都会遇到这样的困境,接下来就让小编带领大家学习一下如何处理这些情况吧!希望大家仔细阅读,能够学有所成!
Given linked list: 1->2->3->4->5, and n = 2.
After removing the second node from the end, the linked list becomes 1->2->3->5.
/**
* Definition for singly-linked list.
* public class ListNode {
* int val;
* ListNode next;
* ListNode(int x) { val = x; }
* }
*/
public class Solution {
public ListNode removeNthFromEnd(ListNode head, int n) {
ListNode lead = head;
ListNode follow = head;
for (int i = 0; i < n; i++){
lead = lead.next;
}
if (lead == null){
head = head.next;
} else {
while (lead.next != null){
lead = lead.next;
follow = follow.next;
}
follow.next = follow.next.next;
}
return head;
}
}
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