Class Solution


  • public class Solution
    extends Object
    189 - Rotate Array.

    Medium

    Given an array, rotate the array to the right by k steps, where k is non-negative.

    Example 1:

    Input: nums = [1,2,3,4,5,6,7], k = 3

    Output: [5,6,7,1,2,3,4]

    Explanation:

     rotate 1 steps to the right: [7,1,2,3,4,5,6]
     rotate 2 steps to the right: [6,7,1,2,3,4,5]
     rotate 3 steps to the right: [5,6,7,1,2,3,4] 
    

    Example 2:

    Input: nums = [-1,-100,3,99], k = 2

    Output: [3,99,-1,-100]

    Explanation:

     rotate 1 steps to the right: [99,-1,-100,3]
     rotate 2 steps to the right: [3,99,-1,-100] 
    

    Constraints:

    • 1 <= nums.length <= 105
    • -231 <= nums[i] <= 231 - 1
    • 0 <= k <= 105

    Follow up:

    • Try to come up with as many solutions as you can. There are at least three different ways to solve this problem.
    • Could you do it in-place with O(1) extra space?
    • Constructor Detail

      • Solution

        public Solution()
    • Method Detail

      • rotate

        public void rotate​(int[] nums,
                           int k)