[主观题]

设有关键码序列(17,8,3,25,16,1,13,19,18,4,6,21),要按关键码值递增的次序排序,用初始增量为 () 的希尔排序法,一趟扫描后的结果是:16,1,3,19,17,4,6,24,18,8,13,25。

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