编辑代码

class Main {
    public static void main(String[] args) {
        String[] fruits = {"苹果", "香蕉", "橘子", "猕猴桃"};
        int[] weights = {15, 18, 10, 9};
        int[] values = {300, 180, 150, 270};
        int backpackCapacity = 20;

        int[][] dp = new int[fruits.length + 1][backpackCapacity + 1];

        for (int i = 1; i <= fruits.length; i++) {
            for (int j = 1; j <= backpackCapacity; j++) {
                if (weights[i - 1] <= j) {
                    dp[i][j] = Math.max(dp[i - 1][j], dp[i - 1][j - weights[i - 1]] + values[i - 1]);
                } else {
                    dp[i][j] = dp[i - 1][j];
                }
            }
        }

        int maxValue = dp[fruits.length][backpackCapacity];
        System.out.println("背包中水果的总价值：" + maxValue);
        System.out.println("装水果的策略：");

        int i = fruits.length;
        int j = backpackCapacity;
        while (i > 0 && j > 0) {
            if (dp[i][j] != dp[i - 1][j]) {
                System.out.println(fruits[i - 1] + " 重量：" + weights[i - 1] + " 价值：" + values[i - 1]);
                j -= weights[i - 1];
            }
            i--;
        }
    }
}