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Aashish said...
Quicksort is slightly sensitive to input that happens to be in the right order, in which case it can skip some swaps. Mergesort doesn't have any such optimizations, which also makes Quicksort a bit faster compared to Mergesort.
To know more about quicksort and mergesort, below link can be useful
Why Quick sort is better than Merge sort
Jul 24, 2014, 4:48:19 AM
Posted to QuickSort Algorithm Example in Java using Recursion - Tutorial