I have a sequence Q with the length of N.
This is the fragment of this sequence:
68 70 72 74 76 78 80
The sequence has been divided into the sets of 4 elements each.
I know the first element of the set. And i need find position of the given element in the set:
For example: let take the set: 60 62 64 66,
I know that the first element is 60, then i was given element 64 and i need to find its position in the set.
This is simple:
A(n) = A + (n - 1)*2 -> 64 = 60 + (n-1)*d thus n = 3
I have found the position of the given element in the current set.
Now the hardest part! The sequence Q is still divided onto sets of 4, BUT it gets reset every 40 items:
74 76 78 80 82 42 44 46 48 50 52 54 56
How would i find the position of the given element in the set of 4 in this case?
Any ideas?
P.S. this is a real life problem i need to solve to finish my programming task :)
EDIT
I also know the N (length of the sequence Q)
EDIT
Sequence can start with any even number