Practice · 3 of 4
FizzBuzz, but rigorous
CHALLENGE
Difficulty: beginner+25 XP
Implement static string FizzBuzz(int n) — for 1..n append lines: multiples of 3 → Fizz, of 5 → Buzz, of both → FizzBuzz, else the number. Each line ends with \n (including the last). n = 0 returns "".
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