该代码为遗传算法以及两个实例，背包问题和旅行商问题，每个实例均有三组数据写在代码中，运行时将不需要的数据注释掉即可。-The source is about generic algorithm, including two examples, the knapsack problem and the traveling salesman problem.

通过Java编码实现标准遗传算法（SGA）解决背包问题(Through Java coding, the standard genetic algorithm (SGA) is implemented to solve knapsack problem)