[daily training] 326 Power of 3

subject

Given an integer , Write a function to determine if it is 3 Power square . If it is , return true ; otherwise , return false .

Integers n yes 3 To the power of ： There are integers x bring n == 3^x

Example 1：
Input ：n = 27
Output ：true

Example 2：
Input ：n = 0
Output ：false

Example 3：
Input ：n = 9
Output ：true

Example 4：
Input ：n = 45
Output ：false

Tips ：
-2³¹<= n <= 2³¹ - 1

Code

package dayLeetCode;


public class dayleetcode326 {
    
    public boolean isPowerOfThree(int n) {
    
        if (n == 0){
    
            return false;
        }

        while (n != 0 && n % 3 == 0){
    
            n /= 3;
        }
        if (n == 1){
    
            return true;
        }else {
    
            return false;
        }


    }

    public static void main(String[] args) {
    
        dayleetcode326 obj = new dayleetcode326();
        System.out.println(obj.isPowerOfThree(27));
    }
}