有四个线程，A线程负责写“A”，B线程负责写“B”，C线程负责写“C”，D线程负责写“D”。分别有四个文件，A文件的内容：“ABCD ABCD...”，B文件的内容：“BCD ABCD A...”，C文件的内容：“CD ABCD AB...”，D文件的内容：“D ABCD ABC...”。

JAVA递归实现全排列算法，含实现源代码,如a、b、c、d的全排列为: abcd abdc acbd acdb adcb adbc bacd badc bcad bcda bdca bdac cbad cbda cabd cadb cdab cdba dbca dbac dcba dcab dacb dabc

dabc:数据采集​​框架

The job shop scheduling problem (JSSP) is an NP-hard problem of wide engineering and theoretical background. In this paper, a discrete artificial bee colony based memetic algorithm, named DABC, is proposed for solving JSSP. Firstly, to make artificia