排序各种数据类型的算法[已关闭]

将每个元素视为字节数组,并应用比较器:

import java.util.Arrays;
import java.util.Comparator;

public class SortAnyObjects {

    public static void main(String[] args) {

        Object[] arr = {1, 'c', '&', "z", "testing", "hello world", '文',
            'Ã¥'};

        byte[][] a = new byte[arr.length][];    // <---- The column is not initialized

        for (int i = 0; i < arr.length; i++) {
            if (arr[i] instanceof Integer) {
                a[i] = String.valueOf((int) arr[i]).getBytes();
            }
            else if (arr[i] instanceof Character) {
                a[i] = String.valueOf((char) arr[i]).getBytes();
            }
            else {     // <---- Here expand your else condition as you expect the datatypes
                a[i] = ((String) arr[i]).getBytes();
            }
        }

        Arrays.sort(a, new Comparator<byte[]>() {
            @Override
            public int compare(
                final byte[] o1,
                final byte[] o2
            ) {
                if (o1 == null) {
                    return 1;
                }
                if (o2 == null) {
                    return -1;
                }
                if (o1 == o2) {
                    return 0;
                }

                if (o2.length > o1.length) {
                    return compare(o2, o1);
                }

                for (int i = 0; i < o1.length; i++) {
                    if (o1[i] == o2[i]) {
                        continue;
                    }
                    return Byte.compare(o1[i], o2[i]);
                }
                return 0;
            }
        });

        System.out.println(Arrays.toString(a));

        for (int i = 0; i < a.length; i++) {
            System.out.println(new String(a[i]));
        }
    }

}