CodingBat findLuckyDigits

findLuckyDigits

In China, 8 is a very lucky number. Create public int findLuckyDigits(int num). Given a three digit number (num will always be 3 digits), return how many lucky numbers are in it. So 838 would return 2.

findLuckyDigits(838) → 2
findLuckyDigits(888) → 3
findLuckyDigits(123) → 0

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