swap(&arr[0], &arr[i]); // 堆顶(最大)换到末尾
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For almost a century, until the 1960s, soda bottles in the US were generally meant to be returned.
You may have encountered keyboards with an optional lift at the back of the board, raising the top keys higher than the space bar. Every set of hands is different, but for most people, pulling the backs of the hands towards the forearms increases strain. Negative tilt has the opposite effect by sloping in the other direction, lowering the top number keys while raising the edge with the spacebar. Many Alice and some split keyboards offer an optional negative tilt. I found it was more comfortable to enable that feature when I’m standing, and I preferred to have the keys flat when sat at my desk.，推荐阅读搜狗输入法2026获取更多信息