Ordering Integers, Small -> Big + knowing length of streak

[MuscleShark88]

Hi everyone, first time posting here.

I was wondering if someone could help me out w/ this little problem I'm having.

card1
card2
card3
card4
card5
card6
card7

are my integers and they range from 2 to 14 (yes, we're dealing w/ cards 2 -> Ace)

what I would like to do is order them from smallest to largest and find out what the longest streak is.

for example:

With the 7 cards being: 2, 2, 3, 4, 7, 9, 13

2, 3, 4 would be the longest streak, so the answer would be 3. I also need to know where the streak starts and where it ends. In this example, 2 is the start, 4 is the end.

Thanks alot for your help!