2824. Check if The Number is Fascinating
My accepted Python solution to LeetCode problem 2824, Check if The Number is Fascinating, running in 3ms.
- Difficulty: Easy
- Python
- Runtime 3ms
- Memory 17.1MB
- Updated
Read the problem on LeetCode View on GitHub
The problem statement is LeetCode’s and stays on their site. What follows is my accepted solution.
Python
Accepted on LeetCode — runtime 3ms, memory 17.1MB, accepted 2025-12-31.
class Solution:
def isFascinating(self, n: int) -> bool:
s = str(n) + str(2 * n) + str(3 * n)
return len(s) == 9 and set(s) == set('123456789')