How to reverse a string in Python without using reverse function

In Python, there are built-in methods for reversing a string. But sometimes you will be asked specifically to reverse a string without using any of the functions.

In this article, we will learn to reverse a string without using reverse function.

Method 1:

The first method for reversing a string other than the reverse function is using string splicing. This is the easiest and fasted method for string reversal.

# using string splicing

def rev(s):
        # string splicing
	print(s[::-1])

rev('Hello world')

rev('Python')

rev('string')

Output:

dlrow olleH
nohtyP
gnirts

Method 2:

def rev(st):

	s = ""
	for i in st:
		s = i + s
	print(s)

rev('malayalam')
rev('water')

Output:

malayalam
retaw