如何只获取数字列值？

numbers = [1, 2, 3, 4, 5]
digits = [num for num in numbers if isinstance(num, int)]

const numbers = [1, 2, 3, 4, 5];
const digits = numbers.filter(num => typeof num === 'number');

import java.util.ArrayList;
import java.util.List;

public class Main {
    public static void main(String[] args) {
        List<Object> numbers = new ArrayList<>();
        numbers.add(1);
        numbers.add(2);
        numbers.add(3);
        numbers.add(4);
        numbers.add(5);

        List<Integer> digits = new ArrayList<>();
        for (Object num : numbers) {
            if (num instanceof Integer) {
                digits.add((Integer) num);
            }
        }
    }
}

using System;
using System.Collections.Generic;

class MainClass {
    public static void Main (string[] args) {
        List<object> numbers = new List<object> {1, 2, 3, 4, 5};
        List<int> digits = new List<int>();
        foreach (object num in numbers) {
            if (num is int) {
                digits.Add((int) num);
            }
        }
    }
}