Implement a JSON string parser in C++.
Use std::variant to hold either a raw character pointer (const char*) or a vector of character pointers (std::vector<const char*>).
The parser should handle the following cases:

1. Single string input
   • Example:"hello world"
     • Should be stored as const char* inside std::variant.
2. Array of strings
   • Example:["hello world"]
     • Should be stored as std::vector<const char*>.
3. Multiple strings in an array
   • Example:["hello world", "!"]
     • Should be stored as std::vector<const char*> with multiple elements.
4. Edge cases:
   • Empty string: ""
   • Empty array: []

Ensure proper memory management and avoid memory leaks.
Good luck!

我们长期稳定承接各大科技公司如TikTok、Google、Amazon等的OA笔试代写服务，确保满分通过。如有需求，请随时联系我们。

We consistently provide professional online assessment services for major tech companies like TikTok, Google, and Amazon, guaranteeing perfect scores. Feel free to contact us if you're interested.