Can you explain the stability of merge sort in C++?
Sure! Merge sort is a stable sorting algorithm, meaning that it preserves the relative order of equal elements.
Why is stability important in sorting algorithms?
Stability is important because it ensures that when two elements are equal, their original order is maintained, which can be crucial in certain applications.
Can you give an example of when stability matters?
Absolutely! For instance, if you're sorting a list of employees by their names and you also want to maintain their original hire dates, a stable sort will keep employees with the same name in the order they were hired.
How does merge sort achieve stability?
Merge sort achieves stability by merging equal elements in the order they appear in the original array, ensuring their relative positions are preserved.
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