# Sorting in python

In this article, we are going to discuss two sorting algorithms and their differences.

### What’s sorting?

Sorting is nothing but arranging the items in a particular sequence. In other words, sorting is the ordering of elements based on our preference. Preference can be ascending or descending depending on our requirements.

In this article, we are going to discuss two sorting algorithms and their differences.

1. Insertion sort
2. Merge sort

## Insertion sort

Consider a list of elements

``x = [73, 79, 56,  4, 48, 35]``

Implementation strategy for ascending order

Step 1:

``````key_element = x[key]

x[:key] is the list that contains all the elements before the key element
x[:key] is sorted``````

Step 2:

``````if some of the elements in x[:key] is greater than x[key]

do pairwise swaps until all the elements in the x[:key+1] is sorted``````

Step 3:

``if all the elements in that x[:key+1] is sorted then move the key to the next index until there's no index left``

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