需要元素值：栈存值，或答案存索引后用 nums[res[i]] 取值。
But while group chats have exploded in popularity because of their informality, that also creates its own challenges: Discussions can veer off topic, repetitive or basic questions can irritate group members, and that viral meme you think is funny could also offend.
。关于这个话题，一键获取谷歌浏览器下载提供了深入分析
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void insertionSort(int arr[], int n) {