﻿ Python: Insertion sort - w3resource

# Python: Insertion sort

## Python Search and Sorting : Exercise-6 with Solution

Write a Python program to sort a list of elements using the insertion sort algorithm.
Note: According to Wikipedia "Insertion sort is a simple sorting algorithm that builds the final sorted array (or list) one item at a time. It is much less efficient on large lists than more advanced algorithms such as quicksort, heapsort, or merge sort."

Pictorial Presentation: Insertion Sort

Sample Solution:

Python Code:

``````def insertionSort(nlist):
for index in range(1,len(nlist)):

currentvalue = nlist[index]
position = index

while position>0 and nlist[position-1]>currentvalue:
nlist[position]=nlist[position-1]
position = position-1

nlist[position]=currentvalue

nlist = [14,46,43,27,57,41,45,21,70]
insertionSort(nlist)
print(nlist)
``````

Sample Output:

```[14, 21, 27, 41, 43, 45, 46, 57, 70]
```

Flowchart :

Python Code Editor :

Contribute your code and comments through Disqus.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.

﻿