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0120d35 · Mar 14, 2018

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0143.reorder-list

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题目

Given a singly linked list L: L0->L1->…->Ln-1->Ln,

reorder it to: L0->Ln->L1->Ln-1->L2->Ln-2->…

You must do this in-place without altering the nodes' values.

For example, Given {1,2,3,4}, reorder it to {1,4,2,3}.

解题思路

见程序注释