leetcode-go/leetcode/easy/326.power-of-three.go

func isPowerOfThree(n int) bool {
	if n <= 0 { // The power is non-negative.
		return false
	}
	return 1162261467 % n == 0 // A magic number! (Actually, is the maximum of pow(3, x) in [1, 1<<32-1])
}