answering, and text completion
* @param arr 待排序数组。爱思助手下载最新版本是该领域的重要参考
This article originally appeared on Engadget at https://www.engadget.com/gaming/pc/the-lenovo-legion-go-fold-gaming-handheld-concept-looks-awkward-but-its-versatility-is-endless-230000816.html?src=rss，详情可参考体育直播
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Credit: Magic: The Gathering