31 定义方法 createPrizes 根据字符串s生成奖品集合ListPrize String s =1 苹果笔记本 8998 3rn + 2 华为荣耀手机 5000 10rn + 3 IPAD 3559 20rn + 4 天猫精灵 89 100;

public static List createPrizes(String s) { List prizes = new ArrayList<>(); String[] lines = s.split("\r\n"); for (String line : lines) { String[] parts = line.split(" "); int id = Integer.parseInt(parts[0]); String name = parts[1]; double price = Double.parseDouble(parts[2]); int quantity = Integer.parseInt(parts[3]); Prize prize = new Prize(id, name, price, quantity); prizes.add(prize); } return prizes;