题目:
解答:
1 class Solution { 2 public: 3 int sumNums(int n) 4 { 5 if(n == 1) 6 { 7 return 1; 8 } 9 n += sumNums(n - 1); 10 return n; 11 } 12 };
面试题64. 求1+2+…+n
原文:https://www.cnblogs.com/ocpc/p/12859883.html