Given an integer stream.
Find out the the mk average(little bit different than normal average) for each integer in the stream where m is no of integer to be considered while calculating average and k is the no of outlier(top k and bottom k) that needs to be excluded from top and bottom.
ex-1: Integer stream : 1,4,5,6,7,3,5,7
m=3,k=1
o/p: [-1, -1, 4, 5, 6, 6, 5, 5]

Explanations : for input 1 and we don't have enough no to calculate the average.hence output prints -1
for input 5 onwards,m=3 satisfies.It means we have 3 nos(1,4,5).Top K and Bottom K elements needs to be excluded from that.
k is 1.Hence from [1,4,5] top 1 element is 5 and bottom 1 element is 1.So the resultant array become[4].Hence average is 4.

Similarly for input 6 last m elemts are [4,5,6].Remove top and bottom.Resultant array will be [5].Average of array is 5.

ex-2: Integer stream : 1,4,5,6,7,3,5,7
m=6,k=2
0/p- [-1, -1, -1, -1, -1, 4.5, 5, 5.5]