Linked List
There are not a lot of difficult Linked List problems. However, these Linked List problems do require some thought.
We recommend all of these problems, all of them are classic Linked List interview questions, especially Copy List with Random Pointers which may seem impossible to solve at first glance.
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Merge k Sorted Lists |
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Sort List |
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Copy List with Random Pointer |
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leetcode.com/problems/merge-k-sorted-lists/solution/
leetcode.com/problems/sort-list/solution/
leetcode.com/problems/copy-list-with-random-pointer/solution/