ArrayList中最大项的索引

import java.util.ArrayList;

public class Main {
    public static void main(String[] args) {
        ArrayList<Integer> list = new ArrayList<>();
        list.add(10);
        list.add(20);
        list.add(5);
        list.add(30);
        list.add(15);

        int maxIndex = findMaxIndex(list);
        System.out.println("最大项的索引是: " + maxIndex);
    }

    public static <T extends Comparable<T>> int findMaxIndex(ArrayList<T> list) {
        if (list == null || list.isEmpty()) {
            throw new IllegalArgumentException("列表不能为空");
        }

        int maxIndex = 0;
        T maxValue = list.get(0);

        for (int i = 1; i < list.size(); i++) {
            if (list.get(i).compareTo(maxValue) > 0) {
                maxValue = list.get(i);
                maxIndex = i;
            }
        }

        return maxIndex;
    }
}

if (list == null || list.isEmpty()) {
    throw new IllegalArgumentException("列表不能为空");
}

public static <T extends Comparable<T>> int findMaxIndex(ArrayList<T> list) {
    // 方法体保持不变
}