Which sorting algorithm(s) Java library uses?
Question
Which sorting algorithm(s) Java library uses?
Solution
Java library uses two main sorting algorithms:
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QuickSort: This is used by the Arrays.sort() method for primitive types such as int, char, etc. QuickSort is a divide and conquer algorithm that divides a large array into two smaller sub-arrays and then recursively sorts them.
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MergeSort: This is used by the Arrays.sort() and Collections.sort() methods for objects. MergeSort is also a divide and conquer algorithm that divides the unsorted list into n sublists, each containing one element (a list of one element is considered sorted), and then repeatedly merges sublists to produce new sorted sublists until there is only one sublist remaining.
These algorithms are chosen because they are efficient and perform well for a variety of data.
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