Card Counting (BlackJack)

In BlackJack, cards are counted with -1, 0, 1 values:

• 2, 3, 4, 5, 6 are counted as +1
• 7, 8, 9 are counted as 0
• 10, J, Q, K, A are counted as -1

Create a function that counts the number and returns it from the array of cards provided.

Examples

count([5, 9, 10, 3, "J", "A", 4, 8, 5]) ➞ 1

count(["A", "A", "K", "Q", "Q", "J"]) ➞ -6

count(["A", 5, 5, 2, 6, 2, 3, 8, 9, 7]) ➞ 5

Notes

• String inputs will always be upper case.
• You do not need to consider case sensitivity.
• If the argument is empty, return 0.
• No input other than: 2, 3, 4, 5, 6, 7, 8, 9, 10, "J", "Q", "K", "A".