- 用递归来代替循环
- 用短路运算来代替if
- 很无语,谁发明的这题
public int Sum_Solution(int n) {
int sum = n;
boolean b = (n>0)&&(sum += Sum_Solution(n-1))>0;
return sum;
}
public int Sum_Solution(int n) {
int sum = n;
boolean b = (n>0)&&(sum += Sum_Solution(n-1))>0;
return sum;
}