What is merge sorting in C++?

Can you explain how merge sorting works in C++?

Sure! Merge sort is a divide-and-conquer algorithm that sorts an array by dividing it into halves, sorting each half, and then merging them back together.

How do I implement merge sort in C++?

You can implement merge sort by creating a recursive function that splits the array and a helper function to merge the sorted halves.

Can you show me a sample code for merge sort?

Absolutely! Here's a simple implementation:

void merge(int arr[], int left, int mid, int right) {
    // Merging logic here
}

void mergeSort(int arr[], int left, int right) {
    // Recursive logic here
}

Let me know if you need the complete code!

What is the time complexity of merge sort?

The time complexity of merge sort is O(n log n) in all cases, which makes it efficient for large datasets.