Rotate Array

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].

class Solution {
public:
    void rotate(int nums[], int n, int k) {
        k = k%n;
        int* copy = (int*)malloc(sizeof(int)*n);
        for(int i=0;i<k;++i)
            copy[i] = nums[n-k+i];
        for(int i=k;i<n;++i)
            copy[i] = nums[i-k];
        for(int i=0;i<n;++i)
            nums[i] = copy[i];
        free(copy);
    }
};