/**********************************
- Texas Hold-em! Your task is to determine if the cards in the list makes up a
- straight (five cards of sequential rank) or not. The cards will always have
- values ranging from 2-14, where 14 is the ace.
- Be aware that the ace (14) also should count as value 1!
- The number of cards will vary, but will never be more than 7 (the board (5) +
- player hand (2))
- Examples:
- straight: 9-10-11-12-13
- straight: 14-2-3-4-5
- straight: 2-7-8-5-10-9-11
- not straight: 7-8-12-13-14
***********************/
coding puzzle credits to codewars