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 several ways to achieve it. Using loop # Python code to reverse a string # using loop...
# Program to explain reverse string or sentence# Using for loop# Reverse String without using reverse function# Define a functiondefreverse_for(string):# Declare a string variablerstring =''# Iterate string with for loopforxinstring:# Appending chars in reverse orderrstring = x + rstringretur...
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...
# Reverse the string using comprehension print("Reversed String: ","".join([string1[i] for i in range(len(string1)-1, -1, -1)])) 2. String Reverse using for Loop By using the for loop to iterate the input string we can easily reverse the String in Python. We will concatenate ...
Python >>>greeting="Hello, World!">>>forcharingreeting[::-1]:...print(char)...!dlroW,olleH>>>greeting[::-1]'!dlroW ,olleH' In this example, you apply the slicing operator ongreetingto create a reversed copy of it. Then you use that new reversed string to feed the loop. In this...
$ python3.7 -m timeit --number 100000 --unit usec 'import string_reverse' 'string_reverse.reverse_while_loop("ABç∂EF"*10)' 100000 loops, best of 5: 9.4 usec per loop $ python3.7 -m timeit --number 100000 --unit usec 'import string_reverse' 'string_reverse.reverse_recursion("AB...
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:...
$ python3.7 -m timeit --number 100000 --unit usec 'import string_reverse' 'string_reverse.reverse_while_loop("ABç∂EF"*10)' 100000 loops, best of 5: 9.4 usec per loop $ python3.7 -m timeit --number 100000 --unit usec 'import string_reverse' 'string_reverse.reverse_recursion("AB...
1.2 Reverse an Array using the For Loop in Python You can use afor looptoiterate the given arrayin reversing order. In general, therange()function can generate the sequence of numbers, if you set the step param with a negative value, it can generate a sequence of decreasing numbers. ...
In this code, the functionreverse_numberuses Python’s built-in functionsstrandintto convert the input number into a string and then back into an integer. The slicing operation[::-1]is used to reverse the string. Output: Reverse Number in Python Using For Loop ...