居民委员会选举前，应当对下列表示参加选举的人员进行登记：
// 每轮将最大值"冒泡"到末尾，所以范围逐渐缩小。WPS下载最新地址对此有专业解读
，更多细节参见同城约会
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* @param arr 待排序数组。关于这个话题，下载安装 谷歌浏览器 开启极速安全的 上网之旅。提供了深入分析