题解 | 求1+2+3+...+n
求1+2+3+...+n
https://www.nowcoder.com/practice/7a0da8fc483247ff8800059e12d7caf1
class Sum
{
public:
Sum()
{
_i=_i+_a;
_a++;
}
static int Get()
{
return _i;
}
private:
static int _i;
static int _a;
};
int Sum::_i=0;
int Sum::_a=1;
class Solution {
public:
int Sum_Solution(int n) {
Sum a[n];
return Sum::Get();
}
};
查看1道真题和解析
