如何使数组/ json_string中的数字为负数

def convert_to_negative(arr):
    for i in range(len(arr)):
        if isinstance(arr[i], int) or isinstance(arr[i], float):
            if arr[i] > 0:
                arr[i] = -arr[i]
    return arr

# 示例输入
array = [1, 2, 3, -4, 5, -6]

# 调用函数进行转换
result = convert_to_negative(array)

# 输出结果
print(result)

import json

def convert_to_negative(json_str):
    json_obj = json.loads(json_str)
    convert_json_obj(json_obj)
    return json.dumps(json_obj)

def convert_json_obj(obj):
    if isinstance(obj, dict):
        for key in obj:
            if isinstance(obj[key], int) or isinstance(obj[key], float):
                if obj[key] > 0:
                    obj[key] = -obj[key]
            elif isinstance(obj[key], dict) or isinstance(obj[key], list):
                convert_json_obj(obj[key])
    elif isinstance(obj, list):
        for i in range(len(obj)):
            if isinstance(obj[i], int) or isinstance(obj[i], float):
                if obj[i] > 0:
                    obj[i] = -obj[i]
            elif isinstance(obj[i], dict) or isinstance(obj[i], list):
                convert_json_obj(obj[i])

# 示例输入
json_string = '{"numbers": [1, 2, 3, -4, 5, -6], "nested": {"positive": 7, "negative": -8}}'

# 调用函数进行转换
result = convert_to_negative(json_string)

# 输出结果
print(result)