import json

# 原始JSON数据
json_data = '''
{
    "data": [
        {
            "title": "C",
            "value": 10
        },
        {
            "title": "A",
            "value": 30
        },
        {
            "title": "B",
            "value": 20
        }
    ]
}
'''

# 解析JSON数据
data = json.loads(json_data)

# 提取标题和相关的标题值
titles = [item["title"] for item in data["data"]]
values = [item["value"] for item in data["data"]]

# 根据标题排序
sorted_titles = sorted(titles)

# 根据标题值排序
sorted_values = [value for _, value in sorted(zip(titles, values))]

# 更新JSON数据
for i, item in enumerate(data["data"]):
    item["title"] = sorted_titles[i]
    item["value"] = sorted_values[i]

# 转换回JSON字符串
sorted_json_data = json.dumps(data)

print(sorted_json_data)