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待排序的元素需要实现 Java 的 Comparable 接口，该接口有 compareTo() 方法，可以用它来判断两个元素的大小关系。研究排序算法的成本模型时，计算的是比较和交换的次数。使用辅助函数 less() 和 swap() 来进行比较和交换的操作，使得代码的可读性和可移植性更好。pub...

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