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].

 1 class Solution {
 2 public:
 3     void rotate(int nums[], int n, int k) {
 4         k = k%n;
 5         int* copy = (int*)malloc(sizeof(int)*n);
 6         for(int i=0;i<k;++i)
 7             copy[i] = nums[n-k+i];
 8         for(int i=k;i<n;++i)
 9             copy[i] = nums[i-k];
10         for(int i=0;i<n;++i)
11             nums[i] = copy[i];
12         free(copy);
13     }
14 };

 

转载于:https://www.cnblogs.com/ittinybird/p/4373972.html