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public class RotateArray {

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

k %= nums.length;

reverse(nums, 0, nums.length - 1);

reverse(nums, 0, k - 1);

reverse(nums, k, nums.length - 1);

}

public void reverse(int[] nums, int start, int end) {

while (start < end) {

int temp = nums[start];

nums[start] = nums[end];

nums[end] = temp;

start++;

end--;

}

}

}