Method isPowerOfThree

Java/Power-of-Three.java:2–14

(int n)

class Solution {
    public boolean isPowerOfThree(int n) {
        
        if(n < 1)
        {
            return false;
        }
        
        while(n % 3 == 0)
        {
            n = n/3;
        }
        return n==1;
    }
}