Updated April 10, 2023

## Introduction to Selection sort vs Bubble sort

The two sorting algorithms used for sorting are Selection sort and Bubble sort and the method used by Bubble sort to perform the sorting is exchanging the elements in the list to be sorted whereas the method used by Selection sort to perform the sorting is selection of elements in the list to be sorted and when it comes to the stability of the sorting techniques, Bubble sort is a stable algorithm whereas Selection sort is an unstable algorithm but the efficiency of Selection sort algorithm is better when compared to Bubble sort algorithm as Bubble sort algorithm consumes more memory when compared to Selection sort algorithm.

Letβs compare the selection sort technique with the bubble sort technique used to sort the elements in a given list.

### Head to Head Comparison Between Selection sort vs Bubble sort (Infographics)

Below are the top 9 differences between Selection sort vs Bubble sort:

### Comparison table between Selection sort and Bubble sort

The Comparison table between Selection sort and Bubble sort is shown below:

Selection sort |
Bubble sort |

The basic operation in selection sort algorithm to sort the given elements in the list is to select the largest element in the list to be sorted and then exchanging it with the last element in the list. | The basic operation in the Bubble sort algorithm to sort the given elements in the list is to compare each and every adjacent element in the list and then swap them. |

An order of n raised to the power of 2 time is taken by selection sort to sort the elements in the given list that are the best case time complexity is O(n^2). | An order of n time is taken by bubble sort to sort the elements in the given list that is the best case time complexity is O(n). |

The efficiency of Selection sort algorithm to sort the elements in the given list is better when compared to the Bubble sort algorithm. | The efficiency of Bubble sort algorithm to sort the elements in the given list is less when compared to selection sort algorithm. |

The selection sort algorithm is an unstable algorithm. | The Bubble sort algorithm is a stable algorithm. |

The method used by selection sort algorithm to sort the elements in the given list is by performing the selection of elements. | The method used by bubble sort algorithm to sort the elements in the given list is by exchanging the elements in the list. |

The selection sort algorithm is faster when compared to Bubble sort algorithm. | The bubble sort algorithm is slower when compared to selection sort algorithm. |

Selection sort is a non-iterative algorithm. | Bubble sort is an iterative algorithm. |

Selection sort algorithm can sort the given elements in the list either in ascending order or descending order. | Bubble sort algorithm sorts the given elements in the list in ascending order and then the list is reversed to display the elements in the list in descending order. |

Selection sort algorithm to sort the elements in the given list is a complex algorithm when compared to bubble sort algorithm to sort the elements in the given list. | Bubble sort algorithm to sort the elements in the given list is a simple algorithm when compared to selection sort algorithm to sort the elements in the given list. |

There are several differences between selection sort technique and bubble sort technique to sort the elements in the given list. The Key differences between Selection sort and Bubble sort are as follows:

The basic operation in selection sort is to select the largest element in the list to be sorted and then exchanging it with the last element in the list whereas the basic operation in the Bubble sort is to compare each and every adjacent element in the list and then swap them.

An order of n raised to the power of 2 time is taken by selection sort to sort the elements in the given list that is the best case time complexity is O(n^2) whereas an order of n time is taken by bubble sort to sort the elements in the given list that is the best case time complexity is O(n).

The efficiency of Selection sort algorithm is better when compared to Bubble sort algorithm whereas the efficiency of Bubble sort algorithm is less when compared to selection sort algorithm.

The selection sort algorithm is an unstable algorithm whereas the Bubble sort algorithm is a stable algorithm.

The method used by selection sort algorithm to sort the elements in the list is by performing the selection of elements whereas the method used by bubble sort algorithm to sort the elements in the list is by exchanging the elements in the list.

The selection sort algorithm is faster when compared to Bubble sort algorithm whereas the bubble sort algorithm is slower when compared to selection sort algorithm.

The Selection sort algorithm is a non-iterative algorithm whereas the Bubble sort algorithm is an iterative algorithm.

The Selection sort algorithm can sort the given elements in the list either in ascending order or descending order whereas the Bubble sort algorithm sorts the given elements in the list in ascending order and then the list is reversed to display the elements in the list in descending order.

The Selection sort algorithm to sort the elements in the given list is a complex algorithm when compared to bubble sort algorithm to sort the elements in the given list whereas the Bubble sort algorithm to sort the elements in the given list is a simple algorithm when compared to selection sort algorithm to sort the elements in the given list.

### Conclusion

In this article, we have learned the concept of sorting using selection sort and bubble sort and their differences by comparing selection sort method and bubble sort method and understanding the key differences like methods used for sorting, their efficiencies, stabilities, time complexities, speed, etc. between selection sort and bubble sort.

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