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Sort a linked list using insertion sort. public ListNode InsertionSortList(ListNode head) { if(head == null || head.next == null) return head; ListNod 阅读全文
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Given a singly linked list, determine if it is a palindrome. Follow up:Could you do it in O(n) time and O(1) space? 先用2 pointer查找到中间点，然后后半部分reverse， 最 阅读全文
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Given a linked list, return the node where the cycle begins. If there is no cycle, return null. Note: Do not modify the linked list. Follow up:Can you 阅读全文
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A linked list is given such that each node contains an additional random pointer which could point to any node in the list or null. Return a deep copy 阅读全文
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Given a linked list, remove the nth node from the end of list and return its head. For example, Note:Given n will always be valid.Try to do this in on 阅读全文
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Write a program to find the node at which the intersection of two singly linked lists begins. For example, the following two linked lists: begin to in 阅读全文
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Merge k sorted linked lists and return it as one sorted list. Analyze and describe its complexity. 最简单的思路是利用之前Merge 2 sorted Lists, 逐个相加，但是这种的时间复杂度会更高 阅读全文
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Sort a linked list in O(n log n) time using constant space complexity. O(n lg n) constant space的常见sort方法有 merge sort， quick sort， heap sort。 quick sor 阅读全文
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Write a function to delete a node (except the tail) in a singly linked list, given only access to that node. Supposed the linked list is 1 -> 2 -> 3 - 阅读全文
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Reverse a singly linked list. 解法： linked list 最典型的题型之一。 思路相同，也可以不用哨兵： 阅读全文