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题目：Given a linked list, reverse the nodes of a linked list k at a time and return its modified list.If the number of nodes is not a multiple of k the... 阅读全文
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题目:You are given two linked lists representing two non-negative numbers. The digits are stored in reverse order and each of their nodes contain a sin... 阅读全文
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题目：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 c... 阅读全文
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题目：Given a list, rotate the list to the right by k places, where k is non-negative.For example:Given 1->2->3->4->5->NULL and k = 2,return 4->5->1->2-... 阅读全文
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题目：Given a binary tree, flatten it to a linked list in-place.For example,Given 1 / \ 2 5 / \ \ 3 4 6The flatten... 阅读全文