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添加 19删除链表的倒数第N个节点 Kotlin实现

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wz-mibookwindows
2021-08-07 12:11:40 +08:00
parent 9dd846ec55
commit 0f4c80a935
1 changed files with 19 additions and 0 deletions
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19
problems/0019.删除链表的倒数第N个节点.md
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@ -184,6 +184,25 @@ var removeNthFromEnd = function(head, n) {
return ret.next;
};
```
Kotlin:
```Kotlin
fun removeNthFromEnd(head: ListNode?, n: Int): ListNode? {
val pre = ListNode(0).apply {
this.next = head
}
var fastNode: ListNode? = pre
var slowNode: ListNode? = pre
for (i in 0..n) {
fastNode = fastNode?.next
}
while (fastNode != null) {
slowNode = slowNode?.next
fastNode = fastNode.next
}
slowNode?.next = slowNode?.next?.next
return pre.next
}
```
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* 作者微信：[程序员Carl](https://mp.weixin.qq.com/s/b66DFkOp8OOxdZC_xLZxfw)