Maximum In Sliding Windows Of Size K

Given an array/list of integers of length ‘N’, there is a sliding window of size ‘K’ which moves from the beginning of the array, to the very end. You can only see the ‘K’ numbers in a particular window at a time. For each of the 'N'-'K'+1 different windows thus formed, you are supposed to return the maximum element in each of them, from the given array/list.

Input format :

The first line contains a single integer ‘T’ denoting the number of test cases. The 'T' test cases follow.

The first line of each test case contains two single space-separated integers ‘N’ and ‘K’ denoting the number of elements in the array/list and the size of the window size respectively.

The second line contains ‘N’ single space-separated integers denoting the elements of the array/list.

Output format :

For each test case, print the output array/list which contains the sliding window maximum in a separate line.

Note :

You do not need to print anything, it has already been taken care of. Just implement the given function.

Constraints :

1 <= T <= 50
1 <= N <= 10^4
1 <= K <= N
0 <= ARR[i] <= 10^5

Where, ARR[i] denotes the i-th element in the array/list.

Time Limit: 1 sec.