贪心算法应用，输入货物数目，价值，重量，背包负重，输出最佳装货方式。找零钱，输入商品件数，价格，顾客给的钱，给出要找的钱及各面值的数目-Greedy algorithm is applied, enter the number of goods, value, weight, backpack weight, and output the best loading method. Looking for change, enter the number of goods, prices, customers give money, give the number of looking for money and the nominal value of