编辑代码

class Commodity {
    String name;
        int value;
        int weight;

    public Commodity(String n, int w, int v) {
        name = n;
        value = v;
        weight = w;
    }

    public static void getMaxValueBad(int capacity,Commodity commodities[],int commodityCount){
        int maxValue = -1;
        int maxValuePos = -1;

        for(int i = 0; i < Math.pow(2, commodityCount); i++){
            int pos = i;
            int weight = 0;
            int value = 0;
            int current = 0;
        

            while (pos > 0) {
                if ((pos & 1) == 1) {
                    weight += commodities[current].weight;
                    value += commodities[current].value;

                }
                pos = pos >> 1;
                ++current;
            }

            if (weight <= capacity && maxValue < value) {
                maxValue = value;
                maxValuePos = i;
            }
        }

        if (maxValuePos > 0) {
            int current = 0;
            System.out.println("我想要拿取：");
            while (maxValuePos > 0) {
                if ((maxValuePos & 1) == 1) {
                    System.out.println(commodities[current].name+"("+commodities[current].weight+","+commodities[current].value+");");
                    
                }
                maxValuePos = maxValuePos >> 1;
                ++current;
            }
        }
    }
	public static void main(String[] args) {
        //测试1：
        Commodity[] commodities = {
            new Commodity("吉他", 15, 1500),
            new Commodity("笔记本电脑", 20, 2000),
            new Commodity("音响", 30, 3000)
        };

        getMaxValueBad(35, commodities, 3);
        //测试2:
        Commodity[] commodities2 = {
            new Commodity("吉他", 15, 1500),
            new Commodity("笔记本电脑", 20, 2000),
            new Commodity("音响", 30, 3000),
            new Commodity("iPad",5,4000)
        };

        getMaxValueBad(40, commodities2, 4);
		
	}
}