Given an N arrays of size K each.. each of these K elements in the N arrays are sorted, each of these N*K elements are unique. Choose a single element from each of the N arrays, from the chosen subset of N elements. Subtract the minimum and maximum element. Now, this difference should be least possible Minimum.. Hope the problem is clear
N=1 : 6, 16, 67
N=2 : 11,17,68
N=3 : 10, 15, 100
here if 16, 17, 15 are chosen.. we get the minimum difference as 17-15=2
This is the question someone asked at stackoverflow. I tried to understand its solution but wasnt able to. Seems like I am missing something.