@param head The linked list's head. Note that the head is guanranteed to be not null, so it contains at least one node. :type head: ListNode """ self.__head=head # Proof of Reservoir Sampling: # https://discuss.leetcode.com/topic/53753/brief-explanation-for-reservoir-sampling defge...
[LeetCode] 707. Design Linked List 设计链表 Design your implementation of the linked list. You can choose to use the singly linked list or the doubly linked list. A node in a singly linked list should have two attributes:valandnext.valis the value of the current node, andnextis a pointe...
在Discuss里看到了一种快慢指针解法,觉得太太太巧妙了! 设两个指针,同时出发,但一个指针每次走两步,一个指针...【C++】【LeetCode】141. Linked List Cycle 题目Given a linked list, determine if it has a cycle in it. Follow up: Can you solve it without using extra space? 思路 这道题不让用...
LeetCode 328. Odd Even Linked List 本题主要解决将一个链表中的偶数节点全放在奇数节点之后,并返回头结点。 本题比较简单,新建一个odd节点,指向下一个奇数节点,even节点指向偶数节点,用节点evenhead记录偶数节点的头,当所有循环完成时,将最后一个奇数节点的next指向evenhead。 代码如下:......
Can you solve this real interview question? Intersection of Two Linked Lists - Given the heads of two singly linked-lists headA and headB, return the node at which the two lists intersect. If the two linked lists have no intersection at all, ...
lintcode:(35) Reverse Linked List Reverse a linked list. Example For linked list 1->2->3, the reversed linked list is 3->2->1 Challenge Reverse it in-place and in one-pass 题解1 - 非递归 联想到同样也可能需要翻转的数组,在数组中由于可以利用下标随机访问,翻转时使用下标即可完成。而在单...
Rotate List Odd Even Linked List 参考资料: https://discuss.leetcode.com/topic/110475/c-solution-o-1-space-9ms 本文转自博客园Grandyang的博客,原文链接:[LeetCode] Split Linked List in Parts 拆分链表成部分 ,如需转载请自行联系原博主。
// https://discuss.leetcode.com/topic/53812/using-reservoir-sampling-o-1-space-o-n-time-complexity-c/2 /** * Definition for singly-linked list. * public class ListNode { * int val; * ListNode next; * ListNode(int x) { val = x; } ...
解法二中提到如果用先序遍历的话,会丢失掉右孩子,除了用后序遍历,还有没有其他的方法避免这个问题。在Discuss又发现了一种解法,参考这里。 为了更好的控制算法,所以我们用先序遍历迭代的形式,正常的先序遍历代码如下, publicstaticvoidpreOrderStack(TreeNoderoot){if(root==null){return;}Stack<TreeNode>s=newSta...
```java private ListNode reverseList(ListNode head) { if (head == null) { return null; } ListNode tail = null; while (head != null) { ListNode temp = head.next; head.next = tail; tail = head; head = temp; } return tail; } ``` 然后整体的代码就出来了。 public boolean isPalin...