遗传算法解决复杂背包问题，用Java编写。该背包拥有3个属性，500个东西，50个包包。求解包与包之间物品重量差最小，并且同一个背包的物品属性有特殊要求。该程序容易修改。 -Genetic algorithms to solve complex knapsack problem, written in Java. The backpack has three properties, 500 things, 50 bags. Solving package and package goods