2013年4月1日
摘要：
One measure of "unsortedness" in a sequence is the number of pairs of entries that are out of order with respect to each other. For instance, in the letter sequence "DAABEC", this measure is 5, since D is greater than four letters to its right and E is greater than one letter to 阅读全文
posted @ 2013-04-01 21:23
QuentinYo
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