Odd Even Linked List
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题目描述:
Given a singly linked list, group all odd nodes together followed by the even nodes. Please note here we are talking about the node number and not the value in the nodes.
You should try to do it in place. The program should run in O(1) space complexity and O(nodes) time complexity.
Example:
Given 1->2->3->4->5->NULL
,
return 1->3->5->2->4->NULL
.
Note:
The relative order inside both the even and odd groups should remain as it was in the input.
The first node is considered odd, the second node even and so on ...
思路很简单,用两个指针,一个指向奇数节点,一个指向偶数节点,然后将两个拼接起来就行了
代码如下:
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