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What sorting method is used by sort function in c++

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Apr 28, 2024 pm 06:21 PM

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The sort function in C employs the quick sort algorithm, which works by following steps: Selecting the pivot and partitioning the array. Repeat step 1 recursively for the left and right subarrays until sorting is complete. The advantages of quick sort include an average time complexity of O(n log n) and low space complexity, but the disadvantage is that it may degenerate to O(n^2) complexity in extreme cases, and it is not a stable sorting algorithm.

What sorting method is used by sort function in c++

The sorting algorithm used by the sort function in C

The sort function used in C is the quick sort algorithm.

Quick Sort

Quick Sort is a divide-and-conquer sorting algorithm that works through the following steps:

Selection pivot Axis: Take the first element in the array as the pivot.
Partitioning: Traverse the array, moving elements smaller than the pivot to the left, and elements larger than the pivot to the right.
Recursion: Repeat steps 1-2 for the left subarray and right subarray.

Advantages:

The average time complexity is O(n log n).
Low space complexity (O(1)).
Fast for most data sets.

Disadvantages:

In certain cases (for example, the array has been sorted or reversed), the time complexity degenerates to O(n^2 ).
The sorting is not stable (the same elements may not be in the original order of the sorted array).

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