如何将字符串列表转换为单个分隔字符串？

# 示例代码
string_list = ['Hello', 'World', 'This', 'Is', 'A', 'Test']
separator = ' '
result = separator.join(string_list)
print(result)  # 输出: Hello World This Is A Test

// 示例代码
let stringList = ['Hello', 'World', 'This', 'Is', 'A', 'Test'];
let separator = ' ';
let result = stringList.join(separator);
console.log(result);  // 输出: Hello World This Is A Test

// 使用StringJoiner
import java.util.StringJoiner;

public class Main {
    public static void main(String[] args) {
        String[] stringList = {"Hello", "World", "This", "Is", "A", "Test"};
        StringJoiner joiner = new StringJoiner(" ");
        for (String s : stringList) {
            joiner.add(s);
        }
        System.out.println(joiner.toString());  // 输出: Hello World This Is A Test
    }
}

// 或者使用String.join()
public class Main {
    public static void main(String[] args) {
        String[] stringList = {"Hello", "World", "This", "Is", "A", "Test"};
        String result = String.join(" ", stringList);
        System.out.println(result);  // 输出: Hello World This Is A Test
    }
}

# 处理空值和非字符串类型
string_list = ['Hello', None, 'World', 123, 'This', 'Is', 'A', 'Test']
separator = ' '
result = separator.join(str(item) for item in string_list if item is not None)
print(result)  # 输出: Hello World 123 This Is A Test