[16,21,11,8,12,22] -> Merge Sort ADIM 1 -> [16,21,11] [8,12,22] ADIM 2 -> [16] [21,11] [8,12] [22] ADIM 3 -> [16] [11,21] [8,12] [22] ADIM 4 -> [11,16,21] [8,12,22] ADIM 5 -> [8,11,12,16,21,22] BigO : O(nlogn)