When implementing sorting and searching algorithms, we need to swap the values of two variables. In Python, there is a simple way to swap two variables, which is as follows: 

var1 = 1 
var2 = 2 
var1,var2 = var2,var1
>>> print (var1,var2)
>>> 2 1

Let's see how it works:

This simple way of swapping values is used throughout the sorting and searching algorithms in this chapter.

Let's start by looking at the bubble sort algorithm in the next section.