int d = getDigit(arr[i], digit);
// 条件解读：栈非空 + 栈顶当前数 + 还有删除名额 → 弹出栈顶（移除大数）
，详情可参考91视频
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A pilot scheme designed to identify and nip potential health problems in the bud has been launched by the Isle of Man's public health directorate.
甚至「灵动岛」本身，也是一个完全触控交互的功能特性，用鼠标反而还有点不太自然。