In this tutorial, we will introduce the way to implement a linear search using python.

What is linear search?

Linear Search a search algorithm that is used to find an element within a list or array. It will check each element of the list one by one until a match is found or the whole list has been searched.

How to implement linear search in python?

1. You should create a list which contains some elements

lst = [1, 2, 3, 4, 5]

2. Find a number using linear search

num = 3

x = -1
for i in lst:
    x += 1
    if num == i:
        print(x)
print(str(-1))

If we have found num in lst, we will print the index, otherwise, we will print -1.