
What is Reversing a String?
Reversing a string means reversing the order of characters in a given string.
For example, if we reverse the string "Hello", we get "olleH"
Pseudo Logic
- Create a method named reverse_string(input_string) that takes in a input_string argument.
- Initialize an empty String variable say reversed_string.
- Iterate through each character using a for loop of the input string in reverse order.
- Now append each character to the reversed_string variable.
- Return the reversed_string variable.
To reverse a string in Python, follow these steps to build your logic:
Python Reverse String Program
#
# Program 13: String Reversal
# 1000+ Python Programs by Code2care.org
#
def reverse_string(input_string):
"""
Args:
input_string (str): The string to be reversed.
Returns:
str: The reversed string.
"""
reversed_string = ''
# Iterate through each character of the input string in reverse order
for i in range(len(input_string) - 1, -1, -1):
# Append each character to the reversed_string variable
reversed_string += input_string[i]
# Return the reversed string
return reversed_string
# Let's try a few examples
print(reverse_string("John"))
print(reverse_string("Stephen"))
print(reverse_string("Andrew"))
print(reverse_string("Harry"))
Output:
nhoJ
nehpetS
werdnA
yrraH
String Reversal using Python Built-in Method
The built-in reversed() function that can be used to reverse a String.
input_str = "Voldomort"
reversed_str = ''.join(reversed(input_str))
print(reversed_str)
Output:
tromodloV
-
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