Sorting Algorithms

  • Last Updated : 12 May, 2023

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Practice Problems on Sorting
Top Quizzes on Sorting Algorithms

What is Sorting?

A Sorting Algorithm is used to rearrange a given array or list of elements according to a comparison operator on the elements. The comparison operator is used to decide the new order of elements in the respective data structure.

For Example: The below list of characters is sorted in increasing order of their ASCII values. That is, the character with a lesser ASCII value will be placed first than the character with a higher ASCII value.


Example of Sorting

Sorting Algorithms:

Table of Complexity Comparison:

NameBest Case  Average Case  Worst Case MemoryStable   Method Used
Quick Sortn log nn log nn^{2}log nNoPartitioning
Merge Sortn log nn log nn log nnYesMerging
Heap Sortn log nn log nn log n1NoSelection
Insertion Sortnn^{2}n^{2}1YesInsertion
Tim Sortnn log nn log nnYesInsertion & Merging
Selection Sortn^{2}n^{2}n^{2}1NoSelection
Shell Sortn log nn^{4/3}n^{3/2}1NoInsertion
Bubble Sortnn^{2}n^{2}1YesExchanging
Tree Sortn log nn log nn log nnYesInsertion
Cycle Sortn^{2}n^{2}n^{2}1NoSelection
Strand Sortnn^{2}n^{2}nYesSelection
Cocktail Shaker Sortnn^{2}n^{2}1YesExchanging
Comb Sortn log nn^{2}n^{2}1NoExchanging
Gnome Sortnn^{2}n^{2}1YesExchanging
Odd–even Sortnn^{2}n^{2}1YesExchanging

Library Implementations:

  1. Introsort – C++’s Sorting Weapon
  2. Comparator function of qsort() in C
  3. sort() in C++ STL
  4. C qsort() vs C++ sort()
  5. Arrays.sort() in Java with examples
  6. Collections.sort() in Java with Examples

Some standard problems on Sorting:

Quick Links :

  1. ‘Practice Problems’ on Sorting
  2. ‘Quizzes’ on Sorting


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