从单元格中的字符串中删除重复项

def remove_duplicates(string):
    words = string.split()  # 将字符串拆分为单词列表
    unique_words = []  # 存储非重复的单词
    for word in words:
        if word not in unique_words:
            unique_words.append(word)
    result = ' '.join(unique_words)  # 将单词列表重新组合为字符串
    return result

# 示例用法
input_string = "This is a test test string with duplicate duplicate words"
output_string = remove_duplicates(input_string)
print(output_string)