[Array]189. Rotate Array

Posted 2020-10-02 两猿社长

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.

思路：将数组中的所有元素值循环移动k步，注意循环的步数并没有说一定小于n!!!!

自己代码：

void rotate(vector<int>& nums, int k) {
        vector<int>temp;
        for(int i = nums.size()-k%nums.size(); i < nums.size(); i++)
            temp.push_back(nums[i]);
        for(int i = 0; i < nums.size()-k%nums.size(); i++)
            temp.push_back(nums[i]);
        nums = temp;
    }

最后的两个vector之间可以直接赋值。