如何根据存储在变量中的类型从集合中筛选项

def filter_by_type(data, data_type):
    return [item for item in data if isinstance(item, data_type)]

# 示例
data = [1, 'a', 2.5, True, 'b']
filtered_data = filter_by_type(data, str)
print(filtered_data)  # 输出: ['a', 'b']

function filterByType(data, type) {
    return data.filter(item => typeof item === type);
}

// 示例
const data = [1, 'a', 2.5, true, 'b'];
const filteredData = filterByType(data, 'string');
console.log(filteredData);  // 输出: ['a', 'b']

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

public class TypeFilter {
    public static <T> List<T> filterByType(List<?> data, Class<T> type) {
        List<T> filteredData = new ArrayList<>();
        for (Object item : data) {
            if (type.isInstance(item)) {
                filteredData.add(type.cast(item));
            }
        }
        return filteredData;
    }

    public static void main(String[] args) {
        List<Object> data = new ArrayList<>();
        data.add(1);
        data.add("a");
        data.add(2.5);
        data.add(true);
        data.add("b");

        List<String> filteredData = filterByType(data, String.class);
        System.out.println(filteredData);  // 输出: [a, b]
    }
}