XXXX

Reposted to my [blog](https://helloacm.com/c-coding-exercise-sum-of-left-leaves-bfs-dfs-recursion/) for better indexing.

## Support me and my work as a witness - [witness thread](https://steemit.com/witness-category/@justyy/justyy-just-another-witness) by 
1. voting me [here](https://steemconnect.com/sign/account_witness_vote?approve=1&witness=justyy), or
2. voting me as [a proxy](https://v2.steemconnect.com/sign/account-witness-proxy?proxy=justyy&approve=1).

Thank you! **Some of My Contributions: [SteemIt Tutorials, Robots, Tools and APIs](https://helloacm.com/tools/steemit/)**

--------------------------------------
刚刚同步到我的[博客](https://justyy.com/archives/6433)。

## 支持我的工作 支持我成为 [见证人](https://steemit.com/cn/@justyy/5h6gyv-cn) 
1. [请在 这里 投我一票](https://steemconnect.com/sign/account_witness_vote?approve=1&witness=justyy), 或者
2. 设置我 [为代理](https://v2.steemconnect.com/sign/account-witness-proxy?proxy=justyy&approve=1).

谢谢您！ 我的贡献：[SteemIt 工具、API接口、机器人和教程](https://helloacm.com/tools/steemit-tools/)

## 股东工具
1. 成为股东：[代理5 SP 即可 （退出股东 输入 0即可）](https://helloacm.com/tools/steemit/delegate-form/?delegatee=justyy)
2. [查询当前股东](https://helloacm.com/tools/steemit/list-of-delegators/?id=justyy)

请注意：每次代理都是以最后一次输入的SP数量为标准，比如已经代理10 SP，想多代理5 SP则需要输入 最后的数字 15 SP（而不是 5！）