Java编程题：删除整数n中m个数字，使余下的数字按原次序最大

import org.apache.commons.lang3.ArrayUtils;
import java.util.Arrays;

public class C {
    public static void main(String[] args) {
        String s = "92081346718538";
        int m = 10;

        int[] arr = new int[s.length()];
        for(int i=0;i<s.length();i++){
            arr[i] = Integer.parseInt(String.valueOf(s.charAt(i)));
        }
        System.out.println(Arrays.toString(arr));
        int[] arr2 = arr.clone();
        Arrays.sort(arr2);

        for(int j=0;j<m;j++) {
            arr = ArrayUtils.removeElement(arr, arr2[j]);
        }
        System.out.println(Arrays.toString(arr));
    }
}