What are the differences between sorting algorithms in C++?

What are the differences between sorting algorithms in C++?

In C++, common sorting algorithms include Quick Sort, Merge Sort, and Bubble Sort. Quick Sort is generally faster with an average time complexity of O(n log n), while Merge Sort is stable and also O(n log n) but uses more memory. Bubble Sort is simple but inefficient with O(n^2) time complexity.

Can you explain why Quick Sort is faster than Bubble Sort?

Quick Sort is faster because it uses a divide-and-conquer approach, efficiently partitioning the array. Bubble Sort, on the other hand, repeatedly steps through the list, comparing adjacent elements, which leads to many unnecessary comparisons.

What are the best use cases for Merge Sort?

Merge Sort is best used for large datasets and when stability is required, such as in sorting linked lists or external sorting where data is too large to fit in memory.

Are there any scenarios where Bubble Sort might be preferred?

Bubble Sort might be preferred for educational purposes to teach sorting concepts due to its simplicity, or for very small datasets where its overhead is negligible.