Python string library does’nt support the in-built “reverse()” as done by other python containers like list, hence knowing other methods to reverse string can prove to be useful. This article discusses severa
Reversing a String Using a For Loop You can also reverse a string in Python by using a for loop to iterate over the characters in the string and append them to a new string in reverse order. Here’s an example: # Using a for loop to reverse a string my_string = 'Hello, World!
Reverse the string using the Python slice operator The slice operator [::] extracts a portion of a string from the provided string. But if you pass -1 as the last parameter, the slice operator will work in reverse order. If you do not pass the first two parameters (start and end posit...
Original String is: PythonForBeginners Reversed String is: srennigeBroFnohtyP Reverse string using for loop To reverse a string using a for loop, we will first calculate the length of the string. Then, we will create a new empty string. Afterwards, We will access the string character by ...
Python Code: # Define a function named 'string_reverse' that takes a string 'str1' as inputdefstring_reverse(str1):# Initialize an empty string 'rstr1' to store the reversed stringrstr1=''# Calculate the length of the input string 'str1'index=len(str1)# Execute a while loop until...
video • Python 3.9—3.13 • June 12, 2023 How can you loop over an iterable in reverse?Reversing sequences with slicingIf you're working with a list, a string, or any other sequence in Python, you can reverse that sequence using Python's slicing syntax:...
The input string "Java Program" is defined, and we convert it into a character array. Using a for loop, each character is pushed onto the stack. As the stack follows LIFO, popping elements from it will yield the characters in reverse order, which are stored in a new character array. ...
Since we can't use the library function, In the function - we run a for loop to reverse the strings by storing the sequence in reverse order in the variable $rev. An additional while loop is set up to check if the variable $text contains a valid string (i.e. to calculate the ...
Testcase 2:In this case, we are entering the number “4538” as input. Enter number: 4538 Reverse of the number: 8354 Method 2: Reverse a Number in Python using Slice Operator In this approach, we will use slice operator [::-1] to reverse the string. ...
in loop and insert each element at the 0th index using the list.insert() method. When a new element will be added at the 0th index the previous element will be shifted to the next position. In this way, we will get a reversed list....