What is the merge sort algorithm in C++?

Can you explain the merge sort algorithm 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 does the merging process work in merge sort?

During the merging process, two sorted arrays are combined into a single sorted array by comparing the smallest elements of each array and adding the smaller one to the result.

Can you provide a sample C++ 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 merge sort logic here
}

Let me know if you need the full code!

What is the time complexity of merge sort?

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