What is an advanced unordered map in C++?

Can you explain what an advanced unordered map is in C++?

An advanced unordered map in C++ is a hash table implementation that allows for fast retrieval of key-value pairs.

What are the benefits of using an unordered map over a regular map?

Unordered maps provide average constant time complexity for lookups, insertions, and deletions, making them faster for large datasets.

Are there any limitations to using unordered maps?

Yes, unordered maps do not maintain the order of elements, and they may use more memory due to their underlying hash table structure.

Can you give me an example of how to use an unordered map in C++?

Sure! Here's a simple example:

#include <iostream>
#include <unordered_map>

int main() {
    std::unordered_map<std::string, int> umap;
    umap["apple"] = 1;
    umap["banana"] = 2;
    std::cout << "Apple: " << umap["apple"] << "\n";
    return 0;
}