it (this is done on all columns simultaneously). The idea is to make the
It was one of the greatest understatements of all time. The crew were in big trouble - a dramatic explosion had disabled their craft.
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到村民小钱家时，问及用水情况，小钱表示：“最近一两个月确实看到别人家有水，但因为之前一直没有水，自己家阀门一直是关的”。小钱还说，自己家距离公用机井较近，自备井的水位受到了影响，年后准备再花钱打一口新井。
* 分区函数：将数组按pivot分成两部分