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Summary

Sorting algorithms can be classified by their time complexity, which is the number of times a particular instruction set is executed rather than the total time taken. There are three types of time complexity: best, average, and worst. The best case complexity of common algorithms used in computer science is O(n log n) and the average case complexity is also O(n log n).
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Quicksort is an example of a sorting algorithm with an average case time complexity of O(n log n).
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Summary
The efficiency of an algorithm depends on two parameters: time complexity and space complexity. Time complexity is the number of times a particular instruction set is executed rather than the total time taken, and space complexity is the total memory space required by the program for its execution. There are three types of time complexity: best, average, and worst.

Time Complexities of all Sorting Algorithms - GeeksforGeeks
geeksforgeeks.org

Summary
Sorting algorithms are algorithms that put elements of a list into an order, and are important for optimizing the efficiency of other algorithms. Sorting algorithms can be classified by computational complexity, swaps, memory usage, recursion, stability, and whether or not they are a comparison sort. Examples of sorting algorithms include bubble sort, quicksort, cycle sort, heapsort, and library sort.

Sorting algorithm - Wikipedia
wikipedia.org

Summary
This page provides a Big-O Algorithm Complexity Cheat Sheet to help people prepare for technical interviews. It includes a chart of the best, average, and worst case complexities of common algorithms used in computer science, as well as operations elements, common data structure operations, and array sorting algorithms. The page also includes an official Big-O Cheat Sheet poster and contributors to help make it even better.

Big-O Algorithm Complexity Cheat Sheet (Know Thy Complexities!) @ericdrowell
bigocheatsheet.com

In computer science, selection sort is an in-place comparison sorting algorithm. It has an O(n2) time complexity, which makes it inefficient on large lists, and generally performs worse than the similar insertion sort. Selection sort is noted for its simplicity and has performance advantages over more complicated algorithms in certain situations, particularly where auxiliary memory is limited.

Selection sort
wikipedia.org

Insertion sort is a simple sorting algorithm that builds the final sorted array (or list) one item at a time by comparisons. It is much less efficient on large lists than more advanced algorithms such as quicksort, heapsort, or merge sort. However, insertion sort provides several advantages:

Insertion sort - Wikipedia
wikipedia.org

In this article, you will learn about Time Complexity and Space Complexity of Selection Sort algorithm along with the complete mathematical analysis of the ...

Time & Space Complexity of Selection Sort
opengenus.org