int pivotIdx = partition(arr, low, high); // 分区并获取pivot位置
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The 2026 T20 World Cup is really ramping up. The group stage built some momentum, and now the Super 8 stage is taking off. Places in the semi finals are up for grabs as the best international T20 sides battle it out.
圖像來源，Dan McKenzie，这一点在51吃瓜中也有详细论述