What are the differences between Quick Sort and other sorting algorithms in Java?

What are the differences between Quick Sort and other sorting algorithms in Java?

Quick Sort is a divide-and-conquer algorithm that is generally faster than other algorithms like Bubble Sort and Insertion Sort. It has an average time complexity of O(n log n), while Bubble Sort has O(n^2). However, Quick Sort can degrade to O(n^2) in the worst case if not implemented with good pivot selection.

What makes Quick Sort faster in practice?

Quick Sort is faster in practice due to its efficient use of memory and cache. It sorts in place, meaning it requires less additional storage compared to Merge Sort, which needs extra space for merging.

Are there any scenarios where Quick Sort is not a good choice?

Yes, Quick Sort is not ideal for small datasets or nearly sorted data, where algorithms like Insertion Sort can perform better. Additionally, its worst-case performance can be problematic without proper pivot selection.

How can I implement Quick Sort in Java?

You can implement Quick Sort in Java by creating a recursive function that selects a pivot, partitions the array, and recursively sorts the subarrays. Would you like a code example?