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Question:Given a linked list, return the node where the cycle begins. If there is no cycle, returnnull.Analysis:只想到了，首先判断是否有环，若有环，则总链首开始，一次判断是否是环的开始，这... 阅读全文
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Question:Given a linked list, determine if it has a cycle in it.Follow up:Can you solve it without using extra space?Analysis:思路一：快慢指针法。前面用到过快慢指针寻找链表的... 阅读全文
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Question:Mergeksorted linked lists and return it as one sorted list. Analyze and describe its complexity.Analysis:合并k个排好序的链表，返回最终一个总的排序列表。分析并描述他的复杂度。l... 阅读全文
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Question:Given a linked list, reverse the nodes of a linked listkat a time and return its modified list.If the number of nodes is not a multiple ofkth... 阅读全文
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Question:Given a linked list, swap every two adjacent nodes and return its head.For example,Given1->2->3->4, you should return the list as2->1->4->3.Y... 阅读全文