
You are given an array of integers nums , there is a sliding window of size k which is moving from the very left of the array to the very right. You can only see the k numbers in the window. Each time the sliding window moves right by one position.
Return the max sliding window .
1 <= nums.length <= 10 ^5-10 ^4 <= nums[i] <= 10 ^41 <= k <= nums.length