剑指offer64 :求1+2+...+n

Posted 2021-11-23 小布丁value

https://leetcode-cn.com/problems/qiu-12n-lcof/solution/mian-shi-ti-64-qiu-1-2-nluo-ji-fu-duan-lu-qing-xi-/
代码思路：逻辑运算符+循环。

public class Day10273 {
    int res=0;

    public int sumNums(int n){
        boolean x=n>1&& sumNums(n-1)>0;
        res+=n;
        return res;
    }
}