[LeetCode]202. Happy Number

[LeetCode]202. Happy Number

题目描述

思路

代码

#include <iostream>

using namespace std;

class Solution {
public:
bool isHappy(int n) {
while (n > 9) {
int next = 0;
while (n) {
next += (n % 10) * (n % 10);
n /= 10;
}
n = next;
}

return n == 1 || n == 7;
}
};

int main() {
Solution s;
cout << s.isHappy(19) << endl;

system("pause");
return 0;
}