摘要：
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 andk=2, return 4−>5−...
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摘要：
题目The set [1,2,3,…,n] contains a total of n! unique permutations.By listing and labeling all of the permutations in order, We get the followi...
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