leetcode 326. Power of Three
2016-10-04 20:21
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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?
class Solution {
public:
bool isPowerOfThree(int n) {
if (n < 1) return false;
while(n % 3 == 0){
n = n / 3;
}
return n == 1;
}
};
Follow up:
Could you do it without using any loop / recursion?
class Solution {
public:
bool isPowerOfThree(int n) {
if (n < 1) return false;
while(n % 3 == 0){
n = n / 3;
}
return n == 1;
}
};
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