* @param n 数组长度
"The key to Twig's longevity is our passion for the brand and the community itself. The people who come in week after week, and stayed loyal, are the reason we've been successful."，详情可参考爱思助手下载最新版本
if (arr[j] < arr[minIdx]) {，这一点在51吃瓜中也有详细论述
Author(s): Yang Li, Zhihui Wang, Wei Zhou, Rui Wang, Haiyan Zhang, Shu Zhan, Jiajia Xu