Poker Flush?

Create a function that takes in two arrays and determines whether there exists a flush.

• The first array represents the 5 cards dealt on the table.
• The second array represents the 2 cards in your hand.

Notation: card number and suit (abbreviated as S = Spades, H = Hearts, D = Diamonds, C = Clubs) separated by an underscore.

Examples

checkFlush(["A_S", "J_H", "7_D", "8_D", "10_D"], ["J_D", "3_D"]) ➞ true // diamond flush

checkFlush(["10_S", "7_S", "9_H", "4_S", "3_S"], ["K_S", "Q_S"]) ➞ true // spade flush

checkFlush(["3_S", "10_H", "10_D", "10_C", "10_S"], ["3_S", "4_D"]) ➞ false

Notes

Hint: If there aren't at least 3 cards of the same suit on the table, there is zero chance of there being a flush.