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189. Rotate Array

2019-11-14 11:17:07
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Rotate an array of n elements to the right by k steps.

For example, with n = 7 and k = 3, the array [1,2,3,4,5,6,7] is rotated to [5,6,7,1,2,3,4].

Note: Try to come up as many solutions as you can, there are at least 3 different ways to solve this PRoblem.

编程珠玑里面也有类似这种思路的例子

class Solution {public: void rotate(vector<int>& nums, int k) { int n = nums.size(); reverse(nums.begin(), nums.begin() + n - k % n); reverse(nums.begin() + n - k % n, nums.begin() + n); reverse(nums.begin(), nums.end()); }};
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