Math-326-Power of Three
2018-01-26 20:56
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Description:
Given an integer, write a function to determine if it is a power of three.
Follow up:
Could you do it without using any loop / recursion?
Solution:
Given an integer, write a function to determine if it is a power of three.
Follow up:
Could you do it without using any loop / recursion?
Solution:
class Solution {
public boolean isPowerOfThree(int n) {
while(n > 1){
if(n % 3 != 0) return false;
n /= 3;
}
return n == 1;
}
}
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